The answer is Model. Hope this helps!!
I believe the answer is b
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Answer:
can you tell question in English your launguage I can't understand
What he did was say that evolution happened that over time the birds seemed to be changing
Answer:Exercise increases the rate at which energy is needed from food, increasing the need for both food and oxygen by the body. This is why when we exercise both pulse/heart rate and breathing rate increase.
Explanation: Hope this helps
