In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment. a. carrying capacity b. abiotic factor c. limiting factor d. biotic factor
Answers
Your question: In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment. a. carrying capacity b. abiotic factor c. limiting factor d. biotic factor
The answer would be C. Limiting Factor
Answer:
C
Explanation:
science, edge 2020
Related Questions
which muscles would a baby gain voluntary control over first during development?
a) Leg muscles
b) Arm muscles
c) Neck muscles
d) Back muscles
Answers
The correct answer is option (c) "Neck muscles."
During the development of a baby, voluntary control over neck muscles is typically gained first. This milestone is often observed around 2-3 months of age. As infants grow, they develop the ability to lift and control their heads, allowing them to hold their heads upright and turn their heads from side to side. This development is crucial for their motor skills and enables them to explore their environment by visually tracking objects and people.
Options (a) "Leg muscles," (b) "Arm muscles," and (d) "Back muscles" gain voluntary control later in the developmental process. Typically, around 4-6 months of age, babies start gaining better control over their leg and arm muscles. They gradually develop the ability to support their weight on their legs and engage in activities such as kicking and reaching for objects. Control over back muscles, such as sitting upright without support, generally emerges between 6-9 months.
In summary, the first muscles that a baby gains voluntary control over during development are the neck muscles. This is followed by the gradual acquisition of voluntary control over leg, arm, and back muscles as they continue to grow and develop.
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Why is water considered to be abiotic?
Answers
Answer: Water is a nonliving factor so it is considered abiotic. Abiotic is any nonliving factor of the ecosystem, With said that water is not living so it is considered abiotic. Hope this helps.
What happens during depolarization of membrane potential?
Answers
Depolarization of membrane potential is a process that occurs when the electrical charge of a cell membrane changes from a negative charge to a positive charge. In this process, there is an influx of sodium and/or calcium ions into the cell or an efflux of potassium ions out of the cell.
During the depolarization of the membrane potential, there is a rapid influx of Na+ ions into the cytoplasm of the nerve fiber. The movement of these ions is passive, meaning it occurs through channels that open as a result of the stimulus. The inward movement of Na+ results in the depolarization of the membrane potential, which means that the membrane potential moves toward zero. This depolarization can be seen in the graph of the action potential as a sharp upward spike.
The depolarization of the membrane potential is followed by repolarization. During repolarization, K+ ions move out of the cytoplasm of the nerve fiber, which results in the re-establishment of the resting membrane potential. The movement of K+ ions is also passive and occurs through channels that open in response to depolarization.
The action potential can be initiated by the binding of a neurotransmitter to a receptor on the post-synaptic membrane or by a change in the membrane potential caused by a sensory stimulus. Once the action potential is initiated, it is propagated along the nerve fiber by a process called saltatory conduction. This means that the action potential jumps from one node of Ranvier to the next, which speeds up the conduction of the signal along the nerve fiber.
Overall, the depolarization of the membrane potential is an important step in the generation and propagation of the action potential. It allows for the rapid transmission of information along the nerve fiber and is essential for the proper functioning of the nervous system.
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What causes the tectonic plates to move convenon Currents in the mante b) the dynamo effect created in the core e electre currents produced in the core d) solar flares
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What is the answer? I’ll give you 10 points
Answers
Answer: may you please rotate the photo, then i can answer, thanks
Explanation:
Answer:
If Claire has Enzyme Active Site Mutation, Then Claire's digestion ____
(personally not enough info for me to finish, but this is approx. what your hypothesis should look like)
radium in an element found in group 2 and period 7. in a normal radium atom, how many energy levels contain at least one atom?
A. 1 B.6 C.7 D.8
Answers
Answer:
the answer is d
Explanation:
In a normal radium atom, there are 7 energy levels.
The periodic table is arranged in groups and periods. The elements in a group have the same number of valence electrons while the elements in the same period have the same number of energy levels.
Radium is an element in period 7. The fact that it is in period 7 implies that it has 7 shells or energy levels. Hence, in a normal radium atom, there are 7 energy levels, each containing electrons.
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7. A child who can roll their tongue (curl it) inherited an allele for tongue curling gene from both parents. What is the child's genotype for tongue curling?
homozygous
heterozygous
Answers
It's a homozygous recessive gene, I assume.
In some science experiments, you are trying to compare the effects that a certain variable may have on the topic of interest. For example, read the following question: What brand of fertilizer makes roses grow the fastest? Let’s say you had three brands that you were using, and we will just call them brands A, B, and C. In an experiment, the different types of fertilizer would be called treatments, because you will be treating roses with each type of fertilizer. Most experiments that have a treatment also have a control, which in this case would be roses that had no fertilizer applied to them. In any experiment you want to eliminate as many variables as possible. In this experiment, the only thing you want to vary is the type of fertilizer. Everything else (sunlight, water, temperature, etc) you hope, will stay the same. Use the information about this example experiment to answer problems 7-10.
How many different groups of roses will you need?
Choose one answer.
a. Three
b. Four
Answers
if a purine paired with another purine, which feature of dna would most likely be different?
Answers
Purine is one of the two major classes of nitrogen-containing bases found in DNA. option(d) The DNA double helix would no longer have a uniform diameter,.
The other class of bases found in DNA is pyrimidines. Purine bases include adenine (A) and guanine (G), while pyrimidine bases include cytosine (C) and thymine (T). The pairing of A-T and G-C is what holds together the double-stranded DNA molecule. In normal conditions, purines are paired with pyrimidines, and not with other purines. This is because purines are larger and have a double-ring structure compared to pyrimidines which have only a single ring. Because of their larger size, two purines cannot fit within the same space between the two strands of DNA, which is why they are not normally paired together. If two purines were paired with each other instead of with pyrimidines, the DNA double helix would no longer have a uniform diameter. This is because the two purines would take up more space in the DNA strand, and the distance between the strands would be different at different points. As a result, the DNA molecule would have a varying diameter along its length. This could potentially have an impact on the structure and function of the DNA, such as interfering with its ability to bind with proteins or other molecules.
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complete question: If a purine paired with another purine, which feature of DNA would most likely be different?
a. The DNA would be a triple helix.
b. The nitrogenous bases would no longer be exposed in the major and minor grooves.
c. DNA strands would run parallel, not antiparallel.
d. The double helix would no longer have a uniform diameter.
e. The DNA helix would be left-handed, not right-handed.
what causes the glow of the reddish areas visible primarily in the spiral arms?
Answers
The reddish areas that are visible primarily in the spiral arms are caused by the presence of hydrogen gas, and these areas are called H II regions.
These regions glow because of the energy they receive from young, hot, and bright stars that are located nearby. The hydrogen gas in these regions gets ionized, which means that the electrons are stripped from the hydrogen atoms, and the atoms become ionized hydrogen, also known as H II.
When the electrons recombine with the hydrogen ions, they emit light at a specific wavelength that is in the red part of the spectrum. This process is called recombination, and it produces the reddish glow that is observed in these regions.
The energy that is responsible for ionizing the hydrogen gas comes from the ultraviolet radiation emitted by the nearby young stars. The stars that are responsible for this process are usually massive and hot, and they emit large amounts of ultraviolet radiation.
The H II regions are often found in areas of active star formation, such as in the spiral arms of galaxies, where there is a high concentration of young stars. In conclusion, the reddish glow that is visible primarily in the spiral arms is caused by ionized hydrogen gas, which emits light at a specific wavelength due to the recombination process.
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Please help <3!!!!!!!!
Answers
Answer:
750m/s
Explanation:
The wavelength of a wave can be calculated by using the formula:
λ = v/f
Where;
λ = wavelength (m)
v = speed of wave (m/s)
f = frequency (Hz or s-¹)
According to the information provided on the wave in this question, λ = 5m, f = 150Hz, v = ?
v = λf
v = 5 × 150
v = 750m/s
Hence, the velocity of the wave is 750m/s.
Define the term “anthropogenic greenhouse effect.” Why is it important to distinguish it from the term “natural greenhouse effect”?
Answers
Answer:
Anthropogenic (human-caused) GHG emissions are modifying the Earth's energy balance between incoming solar radiation and the heat released back into space, amplifying the greenhouse effect and resulting in climate change.
Explanation:
While the natural greenhouse effect makes life possible on Earth, human activity can cause increased amounts of greenhouses gases to be produced in our atmosphere, resulting in a greenhouse effect.
explain how sexual reproduction increases genetic diversion in many species of plants and animal, making sure to include the importance and function of gamites
Answers
Answer:
Sexual reproduction increases genetic diversion because there are two parents, unlike in asexual reproduction where there is only one.
Explanation:
During sexual reproduction, gamites come from both parents and mix together to create genes and traits for the offspring. Gamites are formed through meiosis (reduction division), in which a germ cell undergoes two fissions, resulting in the production of four gametes.
The images show two different types of Galapagos tortoises that scientists believe descended from the same species. The first type (left) are found on islands that have high vegetation and few grasses. The second type (right) are found on an island that has large amounts of grasses and low-lying shrubs. What explains the type of turtle found on the islands with high vegetation?
A.
The environment triggered a gene mutation in neck length in order to help the turtle survive.
B.
Mutations are random, so it is by chance that turtles with longer necks live on these islands.
C.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age.
D.
Turtles with short necks completely lacked adaptations for finding food, so they died off.
Answers
Turtles with genes for long necks had a better chance of surviving to reach reproductive age due to ability to reach the food source.
What type of turtle survive on the Island?Turtles with genes for long necks had a better chance of surviving to reach reproductive age because the long neck enables the turtles to reach the food source that is present on a certain height. So they are able to survive and complete its life cycle.
So we can conclude that option C is the right answer.
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"The images show two different types of Galapagos tortoises that scientists believe descended from the same species." the type of turtle found on the islands with high vegetation. Turtles with genes for long necks had a better chance of surviving to reach reproductive age. Option C. This is further explained below.
What is the Galapagos tortoise?Generally, the Galapagos tortoise is simply defined as the Galápagos gigantic tortoise, belongs to the genus Chelonoidis and is the largest species of tortoise.
In conclusion, a turtle species typical to islands with dense flora. Those turtles that had the genes for a longer neck were more likely to live to reproduce.
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Sketch out a drawing which illustrates how diffusion occurs through a slab in a Fick's.first law model and for a second law model. Explain your model in words.
Answers
Fick's second law provides a more thorough explanation of diffusion by taking into account the change in concentration with regard to both time and position. Fick's first law defines the diffusion of a material across a medium, such as a slab, based on concentration gradients.
Fick's first law states that the rate of diffusion (J) is directly proportional to the negative gradient of the concentration (dC/dx), multiplied by the diffusion coefficient (D). Mathematically, it can be expressed as:
J = -D x (dC/dx)
Let's picture a rectangle shape to symbolize a slab in this situation. With higher concentrations on one side and lower concentrations on the other, the concentration of the diffusing chemical is shown as a gradient. Fick's first law states that until equilibrium is established, the material will move from the side with higher concentration to the side with lower concentration.
Fick's Second Law states that the rate of change of concentration (dC/dt) over time is equal to the diffusion coefficient (D) multiplied by the second derivative of the concentration with respect to position (d²C/dx²). Mathematically, it can be expressed as:
dC/dt = D x (d²C/dx²)
In the case of a slab, the concentration gradient is represented by a curve showing how the concentration changes over time and position. Fick's second law explains how the concentration distribution evolves over time due to the diffusion process. It describes how the concentration diffuses and spreads out within the slab, eventually leading to a more uniform distribution.
By comparing the two models, we can see that Fick's first law focuses on the flux of diffusion, which depends on the concentration gradient. Fick's second law, on the other hand, provides a more comprehensive understanding of how the concentration changes over time and position within the slab.
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What would happen in an ecosystem without decomposers? (3 points)
Answers
Answer:
Without decomposers, dead leaves, dead insects, and dead animals would pile up everywhere. And most importantly decomposes make vital nutrients available to an ecosystem primary producers- usually plants and algae.
name a national park that is located in the Midwestern and development region
Answers
Answer:
Here are some national parks lol:
Badlands National Park (SD) Cuyahoga Valley National Park (OH) Gateway Arch National Park (MO) Hot Springs National Park (AR) Indiana Dunes National Lakeshore (IN) Isle Royale National Park (MI) Theodore Roosevelt National Park (ND) Voyageurs National Park (MN) Wind Cave National Park (SD)
Explanation:
Train a pull into the sation every 6 hours . The train B pulls into the sation every 3 hours . They both pulled thr sation at 3pm. When is the next time they with both pull into the sation at the same time?
Answers
Answer:
9 pm
Explanation:
A pulls into the station every 6 hours while B pulls into the station every 3 hours. Hence, for every time A pulls up, B must have pulled up twice.
They both pulled into the station at 3 pm. At 6 pm (3 pm + 3 hours), B would pull into the station while A would still be on the road. At 9 pm (3 pm + 6 hours), B will pull in once more while A will just be pulling up the first time since 3 pm.
Hence, the next time both trains will pull into the station at the same time would be 9 pm.
Type the correct answer in the box. Spell all words correctly.
Rachel is a forensic investigator. She checks for lividity in the body of a dead victim. What does she know about the cause of lividity?
Rachel knows that
causes the blood to pool to the parts of the body closest to the ground after death.
Answers
Answer:
The answer is Gravity my guy
Explanation:
Finished my Forensics semester with a 98% and I'm currently studying to be a Forensic Anthropologist.
Gravity is the cause of lividity, which causes the blood to collect in the bodily parts closest to the ground when a person dies.
What is lividity?The process through which the body's blood ceases flowing after death as the heart stops pumping is known as livor mortis.
Gravity causes the blood to start settling to the lowest portions of the body, where it congeals and stays even if the body is moved.
Rachel is aware that when someone dies, the blood tends to collect in the body parts that are closest to the ground.
The bodily parts that are closest to the ground or a surface when someone dies are considered to be the lowest portions. The dead person now becomes pale, and the lividity region turns purple or reddish-purple.
Therefore, gravity causes the blood to start settling into the lowest portions of the body.
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which of the following is the most likely explanation for the lack of a filter blocking the passage of alcohol between the maternal and fetal circulations in humans?such a barrier would probably also block important molecules that need to be passed to the fetus.alcohol has some positive effects on the fetus, so evolution has resulted in an intermediate level of filtering that blocks all but the worst abuses of alcohol.there has not been enough time to evolve such a barrier.the maternal and fetal blood mix directly together in an area with many villi, so a barrier is impossible.
Answers
The most likely explanation for the lack of a filter blocking the passage of alcohol between the maternal and fetal circulations in humans is that: there has not been enough time to evolve such a barrier.
The placenta is an organ that is formed during pregnancy and is responsible for providing nutrients and oxygen to the developing fetus while also eliminating waste products. It also acts as a barrier between the maternal and fetal circulations, protecting the developing fetus from potentially harmful substances in the maternal bloodstream.
However, the placenta is not completely impermeable, and some substances, including alcohol, can cross the placental barrier and enter the fetal circulation. The amount of alcohol that reaches the fetus depends on a number of factors, including the amount of alcohol consumed by the mother, the timing of consumption, and individual variations in metabolism and other factors.
Alcohol is a known teratogen, meaning that it can cause abnormalities in fetal development. Because of this, it is recommended that pregnant women avoid alcohol consumption whenever possible. However, the exact reasons for why there is a lack of a filter blocking the passage of alcohol between the maternal and fetal circulations in humans are not fully understood.
One possibility is that there has not been enough time for humans to evolve such a barrier, as alcohol consumption is a relatively recent phenomenon in human history. Another possibility is that such a barrier would also block important molecules that need to be passed to the fetus, making it difficult to develop a filter that could selectively allow certain substances to pass through while blocking others.
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During a cardiac cycle, O The right side of heart contracts before the left side of 1 O The right ventricle contracts before the left ventricle O The left atrium contracts before the right atrium O The atria contract before the ventricles
Answers
During a cardiac cycle, the atria contract before the ventricles. The electrical impulses generated by the sinoatrial (SA) node travels through the atria which initiates their contraction. This is called atrial systole. At this point, the ventricles are relaxed, filling with blood that is returned to the heart through the venous circulation.
The right and left atria contract together while the right and left ventricles contract together. During ventricular systole, the right ventricle contracts before the left ventricle. This is because the right ventricle only has to pump blood through the pulmonary valve into the pulmonary circulation (lungs) while the left ventricle pumps blood through the aortic valve into the systemic circulation.
The cardiac cycle is divided into two phases: diastole and systole. Diastole is when the heart is relaxed and filling with blood. Systole is when the heart is contracting and ejecting blood. During diastole, the heart is filling with blood and the atria are in diastole while the ventricles are in systole.
In conclusion, the atria contract before the ventricles, the right ventricle contracts before the left ventricle, the right and left atria contract together, and the right and left ventricles contract together. During the cardiac cycle, the heart undergoes a series of electrical and mechanical events that work together to pump blood throughout the body.
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proteins called ___ from channels, or tunnels, through the cell membrane to allow some molecules to pass into the cell?
Answers
If a rock (assume it's appropriate for radiometric dating) has 12.5% parent atoms, and 87.5% stable daughter atoms, and the isotope has a half-life of 200 million years, how old is the rock? A) 200 million years old B) 800 million years old C) 600 million years old D) 400 million years old
Answers
If a rock (assuming it's appropriate for radiometric dating) has 12.5% parent atoms, and 87.5% stable daughter atoms, and the isotope has a half-life of 200 million years, the rock is 200 million years old. The correct option is A.
To determine the age of the rock, we can use the concept of radioactive decay and the ratio of parent atoms to stable daughter atoms.
The half-life of an isotope is the time it takes for half of the parent atoms to decay into stable daughter atoms. In this case, the isotope has a half-life of 200 million years.
Since the rock currently has 12.5% parent atoms and 87.5% stable daughter atoms, it means that half of the original parent atoms have decayed. Therefore, the rock has undergone one half-life.
To find the age of the rock, we need to multiply the half-life by the number of half-lives it has gone through. Since the rock has undergone one half-life, the age of the rock is:
Age = 1 * 200 million years = 200 million years.
Therefore, the rock is 200 million years old.
The correct option is A) 200 million years old.
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Mollusks display ______ symmetry.
Answers
Answer:
the answere is Bilateral symmetery
Answer:
Bilateral
Explanation:
Name the organs of the respiratory system
Answers
Answer:
Explanation:
Nose.
Mouth.
Larynx.
Pharynx.
Lungs.
Diaphragm.
Answer: The organs of the respiratory system are
Nose
Mouth
Throat (pharynx)
Voice box (larynx)
Windpipe (trachea)
Large airways (bronchi)
Small airways (bronchioles)
Lungs
Explanation:
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Question: In an area where a river has cut deep into Earth, there are several layers of very different rock exposed. The oldest rock layer is most likely to be the layer that is A Below the other layers. B The thickest layer. C The most rich in fossils. D Igneous intrusive rock.
Answers
Answer:
C
Explanation:
The oldest rock layer is most likely to be the layer that is The most rich in fossils.
What are types of rock layers ?
A rock layer is defined as the formation of the aggregation of different mineral constituents in the earth’s crust and the classification of rocks layer is based on different factors such as Geological classification, Physical classification, Chemical classification.
Geological classification of rock layer include Sedimentary rock formed by the sediments deposition by the weathering of pre-existing rocks and the sediments can be spread by different agents like water, wind, frost, gravity, etc. Examples are Sandstone, limestone, lignite, etc.
Igneous rocks formed by solidification of magma below the earth’s surface, unable to descend, these magma cools down and solidifies into igneous rocks.
Metamorphic rocks formed by the metamorphism process where the f the pre-existing rocks is changed by the influence of heat and pressure, for example Slate, Gneiss, Schist, marble, soapstone etc.
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What covers the outside part of your body
Answers
Answer:
Skin
Explanation:
Skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs.
based on information provided in the animation, which pair of organisms has the closest evolutionary relationship? green algae and land plants cyanobacteria and land plants euglenids and red algae land plants and red algae
Answers
The superfamily Archaeplastida includes both green and red algae. Since the land plants' close cousins were found in the this group of protists, it seems likely that they shared a common ancestor with these protists.
What three categories of algae are there?Brown algae (Phaeophyta), green algae (Chlorophyceae), and red algae are the three main categories of macroalgae (Rhodophyta). Since each group contains granules of chlorophyll, different pigments are used to create the distinctive hues of each group.
list three interesting facts regarding algae.More algae exist in the waters than are stars inside the entire cosmos. Without algae, the base of a aquatic food chain, and other marine creatures would not exist. Algae are the source of all vegetation. Without plants to eat, fish would not have evolved into terrestrial organisms, including humans.
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quick need an answer!!
Cholesterol is a bad lipid. do you agree or disagree, and why?
Answers
Answer:
it has both good and bad
Explanation:
Cholesterol is a type of fat in our bodies. It helps us do a lot of things: build cells, digest food, and make hormones.
While cholesterol is needed for our body to function properly, too much of it can be bad. High cholesterol can cause serious problems in our blood, like clots, plus heart and brain issues.
I agree. Because high cholesterol levels increase the risk of heart disease and stroke.
the molecule that precedes the electron transport chains of both photosystem i and photosystem ii is an electron acceptor. what is the original molecule that is the electron donor for both of these systems?
Answers
water is the original molecule that is the electron acceptor for both of these systems named photosystem I and photosystem II.
water donates the electrons to these systems.
PS I (700nm) and PS II ( 680nm) are the photosystems of the photosynthesis process. light reaction.
splitting of water takes place where oxygen, protons and electrons are produced.
these electrons are transported down the whole chain and energy is produced.
There are 2 types of photophosphorylation which is conversion of ADP to ATP.
cyclic and non cyclic photophosphorylation, in cyclic photophosphorylation PS I and non cyclic photophosphorylation is related to PS I and PS II.
These process is where food is produced by utilizing ATP
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