is the greatest Greenhouse gas emission.

What i need learn about the organic compounds are they useful? and what the importances?

It enlarges energy of carrier waves and become voice

1.) why do you think that 100 million sperm cells are released during ejaculationif only one sperm is needed to fertilize an egg? 2.)how are hormone levels regulated? 3.)how do the reproductive system, endocrine system, and nervous system work together to maintain a healthy body? 4.)if you are in a cold area and you start running, how would the control mechanisms in your body respond as you run? ​