Answer:
the difference is that its bigger
Explanation:
its bigger because birds are much smaller than mammals and they dont have as big as bones like mammals
Answer:
what is the most effective allocation
Explanation:
Building blocks for are body
Answer:
living creaturesss$$ssssssss$ssss$
Answer: a tiny muscle connected to each hair follicle and the skin. When it contracts it causes the hair to stand erect, and a "goosebump" forms on the skin.
