Question

Elements and compouds are all aroud us

Answer 1

Answer:

The four elements common to all living organisms are oxygen (O), carbon (C), hydrogen (H), and nitrogen (N), which together make up about 96% of the human body. In the nonliving world, elements are found in different proportions, and some elements common to living organisms are relatively rare on the earth as a whole.

Explanation:

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Answer 2

Answer:

This is the answer