Answer: The two elements found in sand are silicone and oxygen.
Explanation:
Sand is a granular substance that contain different smaller pieces of rocks and minerals. It is formed fromm weathering of rocks or breakdown of larger particles of rock into smaller pieces. Silicon dioxide or silica is a compound found in sand and also glass. Silicon dioxide is the chemical formula of sand. Silicon dioxide is formed when silicone reacts with two molecules of oxygen to form silicon dioxide. The major elements in sand is silicone and oxygen.
Answer: The muscle cells long oval shape helps it reach across to pull on its neighboring cells, while also cimpressing into a circular shape when the fibers contract. This it take up an optimal amount of space while not make the cell bulge in an uncomfortable and awkward way.
Explanation:
I think under the influence of Antidiuretic hormone (ADH), more concentrated urine is produced. Antidiuretic hormone also called vasopressin acts to maintain blood pressure, blood volume and tissue water content by controlling the amount of water and hence the concentration of urine excreted by the kidney increases. It also helps to control blood pressure by acting on the kidneys and the blood vessels.
Answer:
For a hypothesis to be considered valid, it must make a prediction that scientists can test using a repeatable experiment. If a hypothesis cannot be falsified through experimentation, it cannot be considered part of a valid scientific theory.
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