Flatworms are unsegmented worms. They have a tail and a head end by don't have any body cavity or specialized respiratory and circulatory organs. They are also bilaterally symmetrical which gives them both upper and lower surface. With this accompanying characteristics they typically have a flat shape or appearance.
The answer is C.Macroevolution
Frogs belong to kingdom aninalia ( animals)
Answer:
By using the secretion of insulin and glucagon.
Explanation:
When the level of glucose in blood is high the pancreas secretes insulin that sends a negative feedback signal to the liver to absorb glucose. Synthesis of fats is initiated, glucose transported to the muscles and adipocytes for storage through glycogenolysis.
When the levels of glucose are too low in the blood, the pancreas secretes glucagon to initiate the breakdown of glycogen by the liver.
