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
It is the Mid-Atlantic Ridge.
Such unequal distribution of resources was commonly related to land for agriculture, necessary for population growth.
<span>Pancreas. The pancreas does so by having beta cells that secrete a certain amount of insulin after consumption of food. There are then delta cells that regulate the beta cells, and then gamma cells that in turn regulate the delta cells.</span>
