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Which of the following is an example of gene flow?
O The movement of people on Earth steadily increases and alters the course of human evolution
An earthquake results in the formation of a canyon, splitting a population of toads apart
O A fire drastically reduces the size of a white-tailed deer population. The remaining individuals spread out throughout the remaining forest
A small population of grasshoppers gets blown away and isolated during a storm. The gene pool of the new population is different from the original population
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An example of gene flow is: A. The migration/movement of people on Earth which gradually increases and alters the course of human evolution.
What is Gene Flow?Gene flow, which can also be referred to as gene migration, is the transfer of genes or genetic material from one population of a species to another.
Migration of humans from one region to another leads to people of one race intermarrying with people of another entire race.
For example, A European migrating to North America, and getting married to a North American thereby giving birth to offspring exhibiting traits of booth a European and a North American. A gene flow has occurred.Therefore, an example of gene flow is: A. The migration/movement of people on Earth which gradually increases and alters the course of human evolution.
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Answer:
A
Explanation:
I took the test
CELL STRUCTURE: Complete The following chart .
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Polar bears are not the only species affected by global warming in the Arctic ecosystem. Predict the impact of environmental change on the stability of this fragile ecosystem. (Choose 3)
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Due to the global warming, the temperatures in the Arctic will continue to rise causing the ice sheets to melt and because of that polar bears and other animals might face extinction.
Global warming as well as other environmental changes in the Arctic are having a crucial impact on the stability of the fragile Arctic ecosystem. As the Arctic continues to warm up, ice sheets will keep melting at an accelerating rate. This can possibly have a major impact on the ecosystem, as many of the species, including polar bears as well as the seals, depend on the ice for their survival.
As the Arctic continues to warm, the sea ice is melting at an accelerating rate. This can have a major impact on the ecosystem, as many species, depend on the ice for their survival.
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How did the scientists show that organisms and Earth changed over time?
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Which statement summarizes the changes that occur to energy in cellular respiration
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Answer:
Where are the statements?
Explanation:
Are the cells able to move on their own? Whyor why not?
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Answer:
Yes, some cells are able to move on their own. This type of movement is known as cell motility, and it is a crucial aspect of many biological processes, such as embryonic development, wound healing, and immune response.
There are different mechanisms by which cells can move. Some cells, such as bacteria and sperm cells, have flagella or cilia that allow them to swim or move through fluids. Other cells, such as white blood cells, use a process called amoeboid motion, where they extend and retract membrane protrusions to move forward.
In addition, some cells are able to migrate through tissues and organs by sensing and responding to chemical cues in their environment. This type of movement is known as chemotaxis, and it allows cells to move towards or away from specific chemicals.
So, in summary, while not all cells are able to move on their own, many types of cells have the ability to move through various mechanisms.
Explanation:
Lub dub sounds represents
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Answer:
Notes to the teacher: Lub Dub
There are two sounds heard during each heart beat. These are called Lub-Dub noises by doctors. When the valves between the upper chambers (atria) and lower chambers (ventricles) close, a "lub" sound is heard. ... The heart contains valves which direct the flow of blood in one direction.
Explanation:
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Describe the role of GA in a-amylase production and in germination. Provide evidence for your claim
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Gibberellic acid (GA) plays a crucial role in a-amylase production and germination. GA stimulates the synthesis and release of a-amylase enzymes, which hydrolyze starch into sugars during germination. Experimental studies have demonstrated that the application of GA accelerates a-amylase production and enhances germination in various plant species
In terms of a-amylase production, GA stimulates the synthesis and release of this enzyme. a-amylase is responsible for breaking down starch into simpler sugars, which are then utilized by the plant for growth and development.
Studies have shown that applying GA to plant tissues or seeds results in an increased production of a-amylase, facilitating the conversion of stored starch into energy-rich sugars.
Regarding germination, GA is involved in breaking seed dormancy and promoting the growth of the embryonic plant.
It stimulates the production of hydrolytic enzymes like a-amylase, which enable the hydrolysis of starch reserves in the endosperm, providing the energy needed for germination and seedling establishment.
Additionally, GA helps in cell elongation and division, promoting the growth of the embryo and the emergence of the radicle.
Evidence for GA's role in both processes includes studies where the exogenous application of GA to seeds or plant tissues has been shown to enhance a-amylase production and promote germination.
Conversely, inhibiting GA synthesis or action results in reduced a-amylase activity and impaired germination. These findings support the critical involvement of GA in both a-amylase production and germination processes in plants.
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A father who is Blood Type O- have a child who is Blood Type B+. What are all the possible phenotypes the mother could be?
Type AB -
Type A -
Type B+
Type AB+
Type B -
Type A+
Type O -
Type O +
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Answer:
Type AB &
Type B+
Explanation:
Answer:
Type AB &
Type B+
Explanation:
Thank You! Please mark me brainliest!
Plz help me well mark brainliest if correct!!...
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Answer:
A. Electing the president of a country
Answer:
A) electing the president of a country
Explanation:
A national event is one which concerns an entire country.
A biologist creates a large population of genetically identical individuals by chopping up a light-colored adult sponge into tiny pieces and scattering the pieces randomly across a coral reef. Many of the pieces that land on darker backgrounds are eaten immediately by fish. Some pieces grow into adult sponges, especially pieces that land on light backgrounds. Which statement describes how phenotypic frequency would change over time in this sponge population?
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Answer:
Natural selection
Explanation:
Natural selection is the main mechanism by which populations adapt and change over time to survive in their environment. Individuals in a population exhibit different gene variants or 'alleles' (i.e., individuals exhibit genetic variation). Some of these alleles are associated with phenotypic traits better suited to the environment than others. Natural selection can change allele frequencies in the population, increasing the frequency of the alleles associated with higher fitness, i.e., those alleles associated with lower mortality and the most offspring in a particular environment. Over time, these advantageous alleles become more common in the population. In consequence, natural selection can be considered as a statement on the expected value of allele frequencies under resampling from one generation to the next.
A tumor or condition that tends to spread abnormal
cells throughout the body is called:
A. Benign
B. Inconsequential
C. Malignant
D. Acute
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PLS HELP ME WILL GIVE 100 PONITS:Explain how to compare 3 and 7 by writing the correct number or symbol in the blanks. 4 12
3 4 8 12 7 9 1
< > = 12 12 2
First, I would rewrite 3 as an equivalent fraction with a denominator of _____. 4
The equivalent fraction is ____. Then, I would compare the equivalent fraction to 7 . 12
So,
3 7
4 1
SUBJECT: science
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Some examples of equivalent fractions include:
3/6 and 2/4 are both equivalents because they are equal to 1/225/50 and 50/100 are both equivalents because they are equal to 1/2, etcWhat is an Equivalent Fraction?This refers to the type of fractions that has different denominators and numerators but have the same value when broken down to the smallest terms.
Furthermore, some more examples of equivalent fractions are:
40/80 and 60/120 are both equivalents because they are equal to 1/2100/200 and 150/300 are both equivalents because they are equal to 1/2Please note that your question is unclear, so I gave you a general overview to help you get a better understanding of the concept of equivalent fractions.
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Match the correct definition to the correct term.
Question 1 options:
4
hypothesis
theory
matter
energy
kilogram
SI system
universal law
physical science
model
1.
the branch of study that includes physics and chemistry
2.
takes up space and has mass
3.
the capacity or ability to do work
4.
testable guess that can be expressed as an "if-then" statement
5.
a scientific explanation that has been repeatedly confirmed
6.
a principle that is in effect always and everywhere
7.
an artificial representation of a real system or process
8.
the standard units in scientific and technical pursuits
9.
the base unit for mass in the SI system
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hypothesis- testable guess that can be expressed as an "if-then" statement theory - a scientific explanation that has been repeatedly confirmed matter-takes up space and has mass energy-the capacity or ability to do work
kilogram-the standard units in scientific and technical pursuits SI system -the base unit for mass in the SI system. universal law-a principle that is in effect always and everywhere.
physical science-the branch of study that includes physics and chemistry model-an artificial representation of a real system or process
What is Theory ?A principle formed to explain things, certain phenomena, or fact which was validated previously known as Theory.
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The cells that form from the first few divisions of a fertilized egg cell can
develop into any cell in the human body or the placenta. What kind of stem
cells are these?
O A. Multipotent stem cells
B. Pluripotent stem cells
C. Totipotent stem cells
D. Unipotent stem cells
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Answer:
The correct answer is D
Explanation:
The cells that form from the first few divisions of a fertilized egg cell can develop into any cell in the human body or the placenta is pluripotent cell. The correct option is B.
What is a stem cell?Stem cells are the raw materials of the body, the cells that give rise to all other cells with specific responsibilities.
Under the right conditions, stem cells divide to form more cells known as daughter cells in the body or in a laboratory.
Stem cells spawn additional cells for the body as it grows and replace damaged or lost specialized cells.
They are able to do this due to two distinct properties: they can divide repeatedly to produce new cells. They can change into the other types of cells that make up the body as they divide.
Pluripotent cells are those that form from the first few divisions of a fertilized egg cell and can develop into any cell in the human body or the placenta.
Thus, the correct option is B.
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The Barton Springs salamander is an endangered species found only in a single spring in the city of Austin, Texas. There is growing concern that a chemical spill on a nearby freeway could pollute the spring and wipe out the species. To provide a source of salamanders to repopulate the spring in the event of such a catastrophe, a proposal has been made to establish a captive breeding population of the salamander in a local zoo. Suppose you are asked to provide a plan for establishing this captive breeding population, with the goal of maintaining as much of the genetic variation of the species as possible in the captive population.
What factors are likely to lead to a loss of genetic variation in the captive population?
a. increased rate of mutation
b. a founder effect
c. reduced genetic drift over time
d. a lack of inbreeding
What strategy would likely be effective in mitigating the loss of genetic variation in the captive population? a. keeping the sex ratio as close to 50:50 as possible
b. stopping gene flow to and from the captive population
c. regularly mating individuals that are related
d. keeping the captive population as small as possible
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Answer:
1. b. a founder effect
2. a. keeping the sex ratio as close to 50:50 as possible
Explanation:
The founder effect is a phenomenon that occurs when a small subset of individuals split from a larger population in order to establish a new colony. The founder effect is known to cause a reduction in genetic variation of the colony due to genetic drift, i.e., due to the random sampling of the individuals that form the colony (which doesn't reflect the total genetic diversity of the original population). Moreover, the sex ratio refers to the proportion of males to females in a population. When establishing a captive population, it is recommended to maintain a sex ratio as close to 50:50 as possible because it reduces inbreeding, and thereby mitigating the loss of genetic variation. In some populations, it has been proposed that a 50:50 sex-ratio might also increase the competition between males, which is believed to be fundamental for maintaining a healthy genetic structure of the population.
What do you think some of the negative consequences of gender socialization could be?
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One negative consequence of gender socialization is the reinforcement of gender stereotypes. Stereotypes are oversimplified and often inaccurate beliefs about groups of people, and they can lead to discrimination and prejudice. Gender stereotypes can limit individual choices and opportunities, as well as contribute to gender-based violence and other forms of inequality.
Another negative consequence of gender socialization is the pressure to conform to traditional gender roles and expectations. This pressure can limit individual expression and creativity, and it can also contribute to mental health issues such as anxiety and depression.
What is the name of the process by which carbon is captured by living organisms and is passed from one organism to another?
a) Nitrogen Cycle
b) Carbon Cycle
c) Water Cycle
d) Rock Cycle
Answers
Answer:
B
Explanation:
The Carbon Cycle is the cycle of where carbon is circulated all over, from the atmosphere to Earth, and back. Our planet is a closed environment thanks to our atmosphere, and so the density and amount of Carbon in circulation is always the same. Carbon is released to the never ending cycle by volcanoes, fossil fuels, and other natural processes. Most of the Carbon on Earth is stored in rocks and the ground, while the rest is everywhere else.
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2. What molecules do cells need to function?
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Answer:
Complex organic food molecules such as sugars, fats, and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together.
Explanation:
Which of the following is accurate statement of the relationships in this cladogram?
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An accurate statement of the relationships in this cladogram is Clades A and C are more closely related than clades A and D.
The correct option is A.
What is a cladogram?A cladogram is a diagram used in biology to show the evolutionary relationships between different species. It is a branching diagram in which each branch represents a different species or group of related species.
Cladograms are constructed based on shared characteristics, called homologies, that are inherited from a common ancestor. The branching pattern on a cladogram indicates the order in which different groups of organisms diverged from a common ancestor. The closer the branches are to each other, the more closely related the groups of organisms are thought to be.
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The outer planets are also called the rock planets.
True
False
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Answer:
false it is called gas giants or Jovian planets
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Explain the three levels of biodiversity and the concerns associated with loss of diversity at each level.
B) Species and genetic diversity can be very beneficial to humans. Describe three ecosystem services that nature provides to humans.
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Answer:
Biodiversity or Biological diversity is a term that describes the variety of living beings on earth. It is described as degree of variation of life. Biological diversity encompasses microorganism, plants, animals and ecosystems such as coral reefs, forests, rainforests, deserts etc.
-In biodiversity, each species, no matter how big or small has an important role to play in ecosystem. It represents the wealth of biological resources available to us. It’s all about the sustaining the natural area made up of community of plants, animals, and other living things that is begin reduced at a steady rate as we plan human activities that is being reduced by habitat destruction.
Explanation:
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity.
B) Ecosystem services provided by biodiversity include pollination, pest control, and nutrient cycling.
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Genetic diversity refers to the variation in genes within a species, which allows populations to adapt and survive in changing environments. Concerns associated with the loss of genetic diversity include reduced adaptability to environmental changes and increased vulnerability to diseases.
Species diversity refers to the variety of different species within an ecosystem. Loss of species diversity can disrupt ecological balance, impact food webs, and lead to the extinction of keystone species. It can also result in the loss of potential sources for medicines, agricultural crops, and other valuable resources.
Ecosystem diversity refers to the variety of different ecosystems in a region. Loss of ecosystem diversity can result in habitat loss, fragmentation, and degradation, leading to the decline or loss of specialized species adapted to specific habitats. It can also impact the provision of ecosystem services, such as water purification, climate regulation, and nutrient cycling.
B) Species and genetic diversity provide several ecosystem services to humans. One example is pollination, where diverse species of pollinators, such as bees, butterflies, and birds, ensure the reproduction of flowering plants and agricultural crops. Another ecosystem service is pest control, where diverse predator species help regulate populations of agricultural pests.
Ecosystems also provide the service of nutrient cycling, where diverse decomposers, such as fungi and bacteria, break down organic matter and recycle nutrients back into the soil. This process is crucial for maintaining soil fertility and supporting plant growth. Lastly, diverse ecosystems contribute to climate regulation by absorbing and storing carbon dioxide, a greenhouse gas that contributes to climate change.
Overall, species and genetic diversity support the functioning and resilience of ecosystems, benefiting human well-being by providing essential services like pollination, pest control, nutrient cycling, and climate regulation. Protecting and conserving biodiversity is essential for maintaining these services and ensuring a sustainable future.
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When rooka change form in the rock eyele, we see an example of the
conservation of
A. volume
B. matter
c. density
D. area
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When a person breathes in, what happens to the diaphragm and to the cage?
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Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
HELP: WILL MARK BRAINLIEST
Answer the blank
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The Krebs cycle occurs in the matrix of the mitochondria and requires acetyl coenzyme-A (acetyl-CoA) that is produced from both lipids and carbs.
What is the Krebs cycle of cell respiration?The Krebs cycle of cellular respiration is the second step of this metabolic pathway which occurs in the mitochondrial matrix to generate NADH and FADH which are used during oxidative phosphorylation to produce ATP.
Therefore, with this data, we can see that the Krebs cycle of cell respiration is the second stage of this process and produces molecules required for ATP synthesis.
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How does energy enter a pond ecosystem?
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Answer:
Ponds get their energy from the sun. As with other ecosystems, plants arethe primary producers. The chlorophyll in aquatic plants captures energy from the sun to convert carbon dioxide and water to organic compounds and oxygen through the process of photosynthesis
What are two tools used for sending information? cars and buses water and wind smoke and wood radio waves and lightwaves
Answers
Answer:
radio waves and lightwaves
Explanation:
Radio waves and light waves are both types of electromagnetic waves in the electromagnetic spectrum. Radio waves and light waves travel a particular distance and hence, are used to convey information over distances.
Based on this question, radiowaves and light waves are both tools used to send information. Radiowaves carry information from the station to the receiver, likewise light waves from one medium to another.
Dr natterson mentions serval programs that she works to close the gap
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How can some thing as massive as a Pacific plate move
Answers
Answer:
convection currents
Explanation:
convection currents in the Earths mantle allow the tectonic plates to slide and grind up against each other.
Drag the tiles to the correct boxes to complete the pairs.
Match each form of energy to its description.
gravitational potential
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Motion energy refers to the energy related to an object's movement. When an object is in motion, it possesses kinetic energy, which is a form of motion energy.
How to explain the energyThe matching will be:
motion energy = energy related to an object's movement
chemical energy = stored energy related to positions of atoms within molecules
thermal energy = energy of motion of particles in a substance
nuclear energy = energy released when a nucleus splits or combines
gravitational potential energy = energy related to height
sound energy = energy generated by vibration of a string
Chemical energy is stored energy that is related to the positions of atoms within molecules. It is the energy that can be released or absorbed during a chemical reaction. When chemical bonds are formed or broken, energy is either released (exothermic reaction) or absorbed (endothermic reaction) in the process.
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