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OLEGan [10]
3 years ago
5

Explain why natural selection cannot occur in a population that has no variation in traits.

Biology
1 answer:
Ann [662]3 years ago
6 0

In any population, members have slight differences among them, whether in height, eyesight acuity, beak shape, rate of egg production, or other traits that may affect survival and reproduction. If a trait has a genetic basis, it can be passed on to offspring helping the terms of natural selection.

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Match each step of the scientific method with its description
sergij07 [2.7K]
Step 1: State the problem
description: define the problem as clearly as possible.
Example: The front brakes are making a loud noise.

Step 2: Gather information
description: Gather data about the problem and make good observations using all 5 senses.
Example: He checked all his other songs and found they all did the same thing.

Step 3: Form a hypothesis
description: a prediction that can be tested.
Example: Luke decided he would try a different set of headphones and see if that helped.

Step 4: Test the hypothesis
description: Use an experiment to test your logical answer to the problem.
- Use controlled conditions to test your hypothesis
A. Controlled experiment: Everything in an experiment that is the same except for the variable.
~ Variable: Something in an experiment that you change, only one per experiment.
~ Constant: Factors in an experiment that stay the same.
Example: Luke asked to borrow 3 diffetent friends' headphones. All the headphones were the same brand. After switching the ears, he found all the headphones worked. However, Luke tried the headphones in his friend's ipod and found they didn't work.

Step 5: Analyze Data
description: go over all the data you have and go over conclusions.
Example: Luke wrote down all his findings and read over all his notes.

Step 6: Draw a conclusion
description: Based on data and observations, conclude the answer to your hypothesis.
- should be logical answers to the question based on data and observations.
- if needed, retest this theory ( possibly with a new hypothesis)
Example: Luke concluded with his data and and observations that his headphones were broken and he needed a new pair.

Step 7: Share results
description: report journal to classmates, or publish a journal of findings.
Example: Luke shared his findings with his mom and friends, and his mom bought him another pair for his birthday.




I hope this helps!
6 0
3 years ago
Identify the primary role of the lymphatic system? a) Delivery of oxygen to the deep muscle cells b) Produce and store large num
Jlenok [28]

Answer:

b) Produce and store large numbers of white blood cells

Explanation:

The lymphatic system's primary role is to produce white blood cells. The main organs were these cells are produced are the bone marrow, the thymus, the spleen, and the lymph nodes, which are distributed in different parts of the body, such as our neck, armpits and near the groin. these organs produce and store white blood cells, that will circulate in the blood or will be in action when the blood is filtered in the spleen or lymphatic nodes.

7 0
3 years ago
FIRST TO ANSWER IN DIFFERENT SENTENCES GETS BRAINLIEST
Rufina [12.5K]

Answer:

1.An example of Batesian mimicry is when the yummy viceroy butterfly mimics the orange and black coloration of the distasteful monarch butterfly. ... Wasmannian mimicry occurs when the mimic resembles it's host (the model) in order to live within the same nest or structure. For example, several beetles closely resemble ants

2.Orange and black Monarchs (Danaus plexippus) are among the most familiar and easily recognizable butterflies found in the vivarium. Bright colors and distinctive wing patterns can be an example of aposematism, also known as a warning coloration.

Explanation:

please mark me as the brainliest answer and please follow me for more answers to your questions

6 0
3 years ago
ОО.0 О.
Anna71 [15]

The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.

6 0
2 years ago
Is the Earth an open, closed, or isolated system? Explain.
Temka [501]

Answer:

Closed Systems. The earth system as a whole is a closed system. ... Virtually no mass is exchanged between the Earth system and the rest of the universe (except for an occasional meteorite). However, energy in the form of solar radiation passes from the Sun, through the atmosphere to the surface.

Explanation:

8 0
3 years ago
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