The answer is D! birds have to migrate for winter to find an abundance of food! they learned this over time making it a learned adaptation
The biome that has over 100 inches of rain each year is the Rainforest. Therefore, the Rainforest has abundant rainfall.
Answer:
cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement