Hormones secreted by the pancreas after we begin to eat, which control fat levels, proteins, and carbohydrates, are called and

Insulin; Glucagon.

Pancreas is a mixed gland as it acts as both exocrine and endocrine gland. As an exocrine land, it secretes digestive enzymes into pancreatic duct and as an endocrine gland, it secretes hormones into blood.

The endocrine part of pancreas is known as Islet of Langerhans which is a group of different types of cells.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.