Answer:
part a answers- 1. false 2. false 3. true 4. true
part b answers- heart, oxygen, carbon dioxide, blood, cell
part c answers- the circulatory system delivers oxygen and nutrients to cells and takes away wastes. the heart pumps oxygenated and deoxygenated blood on different sides. the circulatory system helps protect the body from disease. certain cells and chemicals can fight the germs that cause disease. the blood carries these to the part of the body that needs them.
part d answers- your cells use the oxygen you breathe to get energy from the food you eat. this process is called cellular respiration. during cellular respiration, the cell uses oxygen to break down sugar. the blood picks up oxygen and releases carbon dioxide into your lungs.
if wastes were not removed, the body would be poisoned.
Explanation:
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