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There are three populations
you= 1 population
dog= 1 population
Cat= 1 population
total =3 populations.
The answer is B, because layers mix better at the poles.
Answer:
The respiratory system's main job is to move fresh air into your body while also removing waste gases.
Explanation:
Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe.
