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Ksivusya [100]
3 years ago
15

Help me on this question pleaseee

Biology
1 answer:
nataly862011 [7]3 years ago
8 0

E - pure element

B - pure compound

C - mixture of elements

A - mixture of compounds

D - mixture of elements & compounds

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Nervous system: This systems helps the five sense organs (eyes, ears, nose, tongue, skin) which all contain nerves that send messages to the brain about what is happening. The brain produces a response which it sends via other nerves to the muscles.

Digestive system: This system helps to break down food into simpler substances so it can be used and absorbed into the body. It takes place in the alimentary canal (food tube), mainly in the stomach and small intestine. The digested food is absorbed into the blood.

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