Human encroachment that has greatly reduced the prairie dog populations.
The answer is b)
The niche is the job the animal does in it's habitat to contribute to the habitat.
Multiply by the power of the eyepiece, usually 10x.
Organ. An organ is a system of tissues that work together on a larger scale to do certain jobs within an animal's body. Examples of organs are the brain, heart and lungs. Anatomy is an example of a biology specialty concerned with this level.
Answer:
Serotonin
Explanation:
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