Answer:
New skin cells form at the bottom of the epidermis, which is the top part of your skin. Skin cells change shape. They start off kind of fat and square. Over time, they move to the top of the epidermis, flattening out as they go.
Explanation:
Answer:
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Explanation:
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factory farming is a major contributing to water and air pollution as well as deforestation
1. Carbon dioxide is released
2. Gaseous exchange occurs in the alveoli
3. The oxygen supply is adequate
4. Oxygen is used less effectively
If the * marks indicated your answers, then they are all correct.