Answer: In 1858, Pasteur filtered air through a gun-cotton filter and, upon microscopic examination of the cotton, found it full of microorganisms.
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There are 2 million sperm cells are in each drop of semen. The correct option is A. Sperm cells are the cells of male reproductive cells.
<h3>What are sperm cells?</h3>
Sperm cells are the cells present in the testis of the male. They are the gametes, which are the male reproductive cells, help in reproduction. In humans, the sperm cells are motile and long, with a head and a tail like flagella.
There are 2 million sperm present in one drop of semen, so there will be more than a thousand million sperm in the semen. Semen is the white, substance secreted by the male organ. It is made up of water, mucus, and plasma. It is secreted during the process of reproduction that fertilizes the egg of the female.
Thus, the correct option is A. 2 million regarding the number of sperm cells in each drop of semen.
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Answer is c avoiding the tobacco, alcohol and other drugs.
Answer:
things you can do to ease the pain
- try to rest and reduce all possible stress
- try to maintain an anti inflammatory diet like raw fruits etc. And drink plenty water
- quite smoking so was to improve your breathing ability
- reduce inflammatory products
It is true because if he/she was close to you, you relied on that person. So is true.
