The structure of the mature sperm contains a tail, middle section having mitochondria and a head part. The tip of the head part contains <u>acrosome </u>and nucleus. The sperm at maturity, contains a cap like structure at the anterior end. It is termed as acrosome. In this structure, enzymes are present which help the sperm to penetrate into the egg for fertilization. The acrosome allows the plasma membranes of both the cells to fuse and fertilization takes place.
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SO basically...Running water on the surface of the earth erodes the land. Groundwater also can cause erosion under the surface. As water flows through the soil, acid is formed. This acid can cause minerals to be dissolved.
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Minerals that are carried in groundwater can also be deposited in other places. This cycle of erosion and deposition can cause underground caves to form. This happens especially in areas where there is limestone below the surface.
A cave is an underground opening. It has a connection to the surface of the earth. A cave is formed by the erosion of limestone under the ground. The acid water moves through the cracks in the limestone and makes them larger.
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A) To ensure that natural resources are available for future generations
