Answer:
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients, oxygen, carbon dioxide, hormones
Answer: B
Explanation: when coal lights it gives off heat energy
Explanation:
The central nervous system processes stimuli information the body receives, and the peripheral nervous system senses stimuli and carries out the reaction.
The answer is pancreas and intestinal gland. The pancreas mainly secrete amylase, to digest carbohydrates, lipase, to digest fat, and protease, to digest protein. And the intestinal gland mainly secrete carbohydrase, to digest Maltose to glucose, and protease.