Insulin and glucagon have opposite effects on human metabolic processes. a. True
b. False

The correct answer is a. The statement is true.

Explanation:

Insulin and glucagon are two hormones produced by the pancreas, which are essential for life and have an inverse function to each other. Insulin is a hormone of protein origin that has various effects on the transport of metabolites. Glucagon is a complementary hormone in regulating the concentration of glucose in the blood. When glucose levels increase, there is an inhibition in glucagon secretion and an increase in insulin secretion, while when glucose levels decrease, glucagon secretion increases and insulin secretion decreases respectively.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.