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Environmental factors can influence natural selection because they can increase or decrease
the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
Answers
Answer:
49 sec
because you have never seemed yet 59 hour instead 12 hour.
but 24 hour also.
Related Questions
Over various spans of time, human populations have increased, decreased, or remained the same, and at both global and local levels. Which statement best explains this observation?
A. Unlike other populations, the human population changes size because of specific choices of its member
B. Unlike other populations, the humans population has the ability to grow rapidly without limit.
C. Like other populations, the human population is affected by a variety of factors in the environment.
D. Like other populations, the humans population increases and decreases in a cyclical pattern.
Help!! 9th grade Biology
The answer is either A,B,C or D
Answers
Answer:
D
Explanation:
What is it about the structure of the alveolar-capillary unit that makes diffusion possible? Select all that apply.The capillaries are large. The cell wall of the alveoli is thin. Many capillaries surround one alveoli sac. There is always low pressure in the alveolar-capillary unit. The alveolar-capillary unit provides a large surface area.
Answers
Answer:
The most successful option would be: Many capillaries surround a sac.
Explanation:
Although in this question, I wanted to tell you that among all the options that is the most correct, but it is incomplete.
The capillaries that are in the alveolar unit are not only in great numbers to ensure gas diffusion but they are also SINUSOID capillaries where the cells of these capillaries do not have tight cell junctions, and there is a micrespace between cell and cell that forms the capillary wall.
And why is this? Because the greater the permeability of the capillary, the better the process of gas homeostasis or gas exchange at the alveolar level will be favored.
I hope I have completed your question, because it is very important that you know this, they are not simple capillaries that are only increased in number, but their sinusoidal permeable form makes them fulfill a VITAL function for the human being, this does not mean that all the capillaries of the body are like this, do not forget that we are speaking on time of the socket.
Answer:
B. The cell wall of the alveoli is thin
E. The alveolar-capillary unit provides a large surface area
Classify this cell type
DONT POST ANY LINK IN THE ANSWER OR ELSE I WILL REPORT YOU. Will mark BRAINLIEST if correct :)
Answers
New genetic variations sometimes become more common within populations because ____.
Answers
New genetic variations sometimes become more common within populations because the resulting proteins are advantageous and selected for by nature.
What are genetic variations?Genetic variation refers to the differences in DNA among different individuals or populations.Mutations or genetic recombination may result in these differences.Other causes of variations can be random mating and fertilization.Genetic variations can be determined either by phenotypic evaluation or by evaluating enzymes by electrophoresis. Genetic variations can occur at a large scale or small scale within the population.When new variations arise within a population, natural selection decides whether to keep or discard that variation. If the variation is important for the survival it gets selected and becomes common in the population.Learn more about genetic variation here:
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how do flowering plants reproduce asexually and sexually?
Answers
Answer:
Plants reproduce sexually by dropping pollen into another flower. This pollen can go into a flower or, it can drop to the grass. That's when asexual reproduction comes in. The ground absorbs the pollen and the pollen acts like a seed, making a new plant.
See the attached picture if you wanna know what pollen looks like.
Match each step of the scientific method on the left with the statement it describes on the right
(5,6 and 7)
Answers
Answer:
6 and 7
Explanation:
I don't know I need points
Which animal doesn't belong to odd-toed ungulates? pls don't spam this is a lot of my points
Answers
Answer: Rhinoceros
Explanation:
Odd-toed ungulates include the horse, the tapir, and the rhinoceros.
favorable variatons are determined by environmental conditions and pressures
is it natural selection, artificial selection, or both ?
Answers
What type of farming uses monocultures of trees or shrubs? les
Answers
Answer:
commercial plantation
Answer:
commercial plantation
Explanation:
looked it up
Write the complementary strand to this DNA molecule on the line.
G А Т
ССА TG A G TT A CG
Answers
Answer:
If you mean the complementary strand of GAT: Answer is CTA
If you mean the strand for all of it (GATCCATGAGTTACG): Answer is CTAGGTACTCAATGC
Explanation:
Both strands always have to be in a sequence that pairs them to their nitrogenous base pair according to Chargaff's law. So always remember:
A pairs with T (Adenine with Thymine)
C pairs with G (Cytosine with Guanine)
Whenever you need to figure out the other strand, just switch the original base sequence with their base pairs to get the second strand/sequence.
Hope this helps you for future questions. Have a good day, love <3
which of the following is a example of facilitated diffusion?
A. plants bringing nutrients into their roots from the soil
B. the sodium-potassium pump actively bringing sodium and potassium into the cell
C. protein channels embedded in the cell membrane helping large molecules enter the cell
D. liquid molecules colliding
Answers
An example of facilitated diffusion is protein channels embedded in the cell membrane helping large molecules enter the cell. So, the correct answer will be option (c).
The type of diffusion where the molecules move or transfer from a higher concentrated region to a lower concentrated region with the help of a carrier agent is generally known as Facilitated diffusion. Since facilitated diffusion is a type of passive diffusion, it does not need or use energy. Factors, such as the size of the molecules, temperature, diffusion distance, concentration, etc., take part in affecting facilitated diffusion. Some more examples of facilitated diffusion include Ion channels, Glucose transporter, Aquaporins, and so on.
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describe in four (4) complete sentences different
images that analyze related to Ocean Acidification.
Answers
Answer: carbonic acid, (H2CO3), a compound of the elements hydrogen, carbon, and oxygen.
Bicarbonate, HCO3, is a byproduct of your body's metabolism.
A carbonate is a salt of carbonic acid (H2CO3), know by the presence of the carbonate ion, a polyatomic ion with the formula of CO 2− 3.
Calcium is a mineral most often associated with healthy bones and teeth,
2. How is the chromosome theory of inheritance related to Mendel's findings
Answers
The chromosome theory of inheritance is directly related to Mendel's findings in genetics. In Mendel's experiments with pea plants, he observed the inheritance of traits from one generation to the next. He postulated that traits were passed down in discrete units, which he called "factors" (now known as genes).
Later, scientists discovered that these genes were located on chromosomes, which are the structures that carry genetic information in cells. The chromosome theory of inheritance states that genes are located on chromosomes and are passed down from parents to offspring during reproduction. This theory is consistent with Mendel's findings and provides a mechanism for how traits are inherited from one generation to the next.
In summary, the chromosome theory of inheritance helps to explain the physical basis of Mendel's observations and provides a framework for understanding how genetic information is passed down from generation to generation.
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What is the main function of the cell membrane?
A. To pass the genetic information from one cell to another.
B. To protect the cell from Invaders.
C. To regulate what enters and leaves the cell.
Answers
Answer:
pretty sure its b
Explanation:
The answer for this is A.
Meiosis is responsible for generating the variation which is a key feature of seggsual reproduction
(i) Explain why the variation produced is advantageous to the species in which it occurs (2)
(ii) Explain how meiosis gives rise to variation in offspring produced by seggsual reproduction (6)
Answers
Genetic recombination occurs in meiosis which results in genetic variation among offspring which enables them to be better suited to their environment.
What is meiosis?Meiosis is a form of cell division which results in the production of haploid cells know as gametes.
The gametes produced from meiosis then combines together ro produce an offspring whose genetic makeup is a combination of the two parents genes.
Therefore, the genetic recombination that occurs in meiosis results in genetic variation among offspring which enables them to be better suited to their environment.
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Which temperature range corresponds to the cold plasma used to sterilize a wound?
Answers
303 K-313K is the temperature range corresponds to the cold plasma used to sterilize a wound.
A novel method of preventing infections in hospital patients is offered via cold plasma treatment.
This technological offshoot from space gear eliminates microorganisms without harming human tissue, hastening the healing of wounds.
Cold plasma offers a wide range of useful applications, including the hygienic handling of food, the treatment of various skin conditions, and the filtration of water in underdeveloped areas.
The development of technologies that can operate at room temperature was made possible by fundamental research conducted in space.
Sensitive medical devices can be quickly sterilized at low temperatures using low-temperature plasma treatment.
Temperature required in cold plasma treatment is 35°C i.e. 35 + 273 = 308K
Hence, the option 303 K-313K is correct.
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Humans build cities that replace grassy areas with concrete. What processes would that impact in the water cycle and why?.
Answers
The process that impact the water cycle such as concrete and asphalt are examples of hard, impermeable surfaces that prevent water from permeating the soil.
Evaporation, condensation, and precipitation are frequently taught as three basic, circular processes that make up the water cycle. This is a good paradigm, but in practice things are much more nuanced. Water flows through ecosystems on Earth in a very complicated way that is still not fully understood. In order to improve our capacity to forecast weather, climate, water resources, and ecosystem health, NOAA is working to deepen our understanding of the water cycle at all scales, from the global to the local.
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In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at her first job and y represents the number of hours she works in a week at her second job. The expression shows how much money Nina has earned this week. Which statement is true?
Nina has worked a total of x – y hours so far this week.
Nina works 15 hours a week at her first job.
Nina makes 20x dollars at her first job each week.
Nina makes $10 per hour at her second job each week.
Answers
Answer:
C. Nina makes 20x dollars at her first job each week.
Explanation:
Are data that do not support a hypothesis useful?
A. No, because the data must be inaccurate
B. No, because the data show that the experiment failed
C. Yes, because the data prove that the experiment was designed
poorly
D. Yes, because the data provide useful information that can lead to
more testing
Answers
Answer:
D
really dude, just read these types of questions the one that's really different is usually right
what structure is responsible for maintaining the consistent shape of a paramecium? macronucleus cell wall pellicle cilia
Answers
The structure is responsible for maintaining the consistent shape of a paramecium is pellicle, option C.
A genus of eukaryotic, unicellular ciliates called Paramecium is frequently used in research as a model ciliate organism. In stagnant basins and ponds, as well as in freshwater, brackish, and marine habitats, parasites are common. Some species have been frequently used in schools and labs to learn biological processes because they are easily grown and may be made to reproduce through conjugation and division. One ciliate researcher referred to Paramecium as the "white rat" of the phylum Ciliophora due to its value as a model organism.
The cilia, which are organised in closely spaced rows along the exterior of the body, are used by a Paramecium to propel itself. Each cilium beats in two phases: a quick "effective stroke," when the cilium is rather rigid, and a gradual "recovery stroke," when the cilium loosely folds to one side and sweeps forward in the opposite direction. The synchronised movement of the tightly packed cilia is characterised by waves of activity that go across the "ciliary carpet," which is frequently compared to the wind blowing across a field of grain.
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(Its actually Physical Science)
To create a molecular model a student will use blue spheres to represent nitrogen (N) and white spheres to represent hydrogen (H). which option correctly describes a model of ammonia, NH3?
A. three blue spheres and three white spheres
B. one blue sphere and three white spheres
C. three blue spheres and one white sphere
D. one blue sphere and one white sphere
Answers
A molecular model is a three dimensional representation of a molecule that aids conceptualization of the actual nature of the molecule.
The correct answer is option B: one blue sphere and three white spheres
A molecular model helps us to see something close to what a molecule actually looks like in a three dimensional way.
The essence of molecular models is to aid conceptualization of details about arrangement of atoms in a molecule.
Since nitrogen is represented with blue balls and hydrogen is represented with white balls, it follows that a properly prepared model consists of one blue sphere and three white spheres.
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Which of the following kingdoms does NOT have members who are heterotrophic? A. Fungi B. Animalia C. Plants D. Protista (Dont send me a file)
Answers
Answer:
Plants
Explanation:
This is because plants kingdom are autotrophic that they are producers.
Plants kingdom are producers because the photosynthesized. The have chlorophyll which trap light energy from the sun and uses carbondioxide and water to produce carbohydrates and oxygen is released. Therefore they are not heterotrophic, they did not depend on other kingdom to feed...they are primary producers.
what is reproduction and explain the types of reproduction in plants?
Answers
Answer:
The production of new individuals from their parents is known as reproduction.
The types of reproduction in plants are:-
asexual : There are several methods of asexual reproduction such as fragmentation, budding, spore formation and vegetative propagation.
Sexual: Sexual reproduction involves the fusion of male and female gametes.
Have a nice day!!\( \huge \boxed{\mathfrak{Answer} \downarrow}\)
Reproduction is the process of producing new offsprings by 2 or 1 matured parents.There are 2 types of reproduction in plants => sexual & asexual reproduction.Sexual reproduction takes place when 2 parent plants form offsprings. Like for example, rose & jasmine.Asexual reproduction takes place when only 1 parent plant alone gives birth to new offsprings. It takes place in hydra.What is Group 13 period 5 on the periodic table
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Answer:
Boron is the fifth element of the periodic table (Z=5), located in Group 13. It is classified as a metalloid due it its properties that reflect a combination of both metals and nonmetals. Aluminum (also called Aluminium) is the third most abundant element in the earth's crust.
Question 2 of 10
What is the likely effect of increasing the use of fossil fuels?
O A. Pollution levels and their effects will decrease.
B. Global warming will steadily decrease.
C. Biodiversity will decrease in most ecosystems.
D. Ecosystems will become more resilient.
Answers
What does it mean to die of "natural causes" or to die of "old age"?
Answers
Explanation:ya que el cuerpo se dessasta por estar en funsionamieto pormucho tiempoc
On the other hand, dying of “old age” is quite similar. It just means someone who is old died from a disease. You can’t actually die of old age. Older people just have a higher chance of getting illnesses than younger people, and possibly dying from it.
I hope that made sense. If it didn’t, I’m sorry there’s no other way for me to explain it properly
Friday, september 2 "a meeting on air force one" hurricane category
Answers
The provided phrase, "Friday, September 2, a meeting on Air Force One and hurricane category," lacks clarity and context. It requires additional information or clarification to provide a meaningful answer.
Air Force One is the official call sign used to identify any United States Air Force aircraft carrying the President of the United States. It serves as a symbol of the President's presence and authority while in flight. However, the connection between Air Force One and hurricane categories is not directly related. Hurricane categories refer to the classification system used to categorize the strength and potential damage of hurricanes. It ranges from Category 1 (weakest) to Category 5 (strongest). Air Force One may play a role in disaster response, including monitoring and providing aid during severe weather events like hurricanes, but its involvement is not specific to hurricane categories.
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PLEASE HELP!!!! Which of the following were responsible for changing the oxygen content in
Earth's atmosphere from no oxygen to 21% oxygen?
A. Prokaryotes
B. Eukaryotes
C. Ribozymes
D. Protobionts
Answers
Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.
Answer:
prokaryotes
Explanation:
i took the quiz
2. Which one of the statements explains a characteristic of both all living organisms and all nonliving material? They both are complex, with spatial organization at several levels. They both conform to the basic laws of chemistry and physics. They both have the ability to reproduce. They both have the ability to change in response to the environment. They both have the capacity to evolve.
Answers
Answer:
They both conform to the basic laws of chemistry and physics.
Explanation:
The statement that explains a characteristic of both all living organisms and all nonliving material is that they both conform to the basic laws of chemistry and physics. The correct option is B.
What are living organisms?A living organism is made up of cells. The cells divide, and the creatures' bodies grow as the total count of cells increases.
A tree is a living entity that exhibits the growth process. The road, pen, and water are non-living organisms that do not exhibit the growth process.
Non-living objects are inanimate artifacts or forces that have the power to influence, shape, alter, and impact the life of an organism.
Non-living things include rocks, water, climate, weather patterns, and natural events like rockfalls and earthquakes.
The statement that encompasses a feature of all living things and all nonliving things is that they both obey the fundamental laws of chemistry and physics.
Thus, the correct option is B.
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In which two places do divergent boundaries occur?
O land and oceans
O oceans and volcanoes
volcanoes and lower mantle
O lower mantle and land
Answers
Answer:
A. land and oceans
Explanation:
I took the test and got it right.
Answer:
the answer is A.land and oceans