Answer:
here you go
Explanation:
There is no single measure of physical fitness, but measures of body composition, aerobic fitness, flexibility and muscular strength and endurance will together provide a picture of overall fitness.
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.
Learn more about sperm cells, here:
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Answer: The nervous system
Explanation:
The first part of the embryo to develop is the neural tube, which will become the spinal cord and brain. As the nervous system starts to develop, the tiny heart starts to pump blood, and other parts of the body—such as the digestive tract and backbone—begin to emerge.
It helps the protection of a body organ let's simplify this a little bit an organ can not just stay in your body fat is a place holder so everything doesnt swish around if you know what i mean. so fat buildes up around organs, tissue, and bones to protect them from harm.
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