Answer:
It is secreted by the pancreas
Explanation:
Insulin is used for negative feedback of blood sugar levels in the blood. It promoted uptake of glucose by cells when the blood sugars are high, especially after a meal. Glucagon hormone, on the other hand, is responsible for the positive feedback.
The answer is the sun has already set leaving darkness. During the time the satellite image was taken, the sunset was taking place across the eastern third of the U.S. and Canada. Cloud conditions were seen from western regions of the U.S., Canada, Texas, and Gulf of Mexico because the sun has not yet set in these areas.
A combo of phenotypes that result in an allele.