Answer:
<u><em>Phosphorus</em></u>
Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
Explanation:
Brainliest?
i believe the answer is "A fundamental role". hope this helps.
The answer is true because you cant live without water
<span>In the "all or none" law of muscle contraction, it states that when the stimulus applied exceeds threshold then the the nerve sending signals to a few muscle fibers will give a complete response; contraction. Graded response is dependent on how many motor units have been recruited. The more motor units, the greater the force in the contraction.</span>
1) A
2) B
3) B
4) C
5) B
6) C
7) D
8) B
9) A
10) A
