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Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Answer:
By contracting, muscles pull on bones and allow the body to move. When you want to bend your elbow, your biceps muscle contracts, and, at the same time, the triceps muscle relaxes. The biceps is the flexor, and the triceps is the extensor of your elbow joint.
Explanation:
yeah, hope it helps a little. :)
Answer:
they are made up of hard spheres that are in random motion
Answer:
Nitrogen has 5 valence electrons
Explanation:
nitrogen has it's attoms form triple bonds which are very hard to break
so non-reactive
