Because you dont want to get skin cancer
The ultra violet rays hit our skin and if we stay outside to long it begins to affect our skin
Answer:
The last one, to swim
Explanation:
The function of cilia and flagella move liquid past the surface of the cell. For single cells, such as sperm, this enables them to swim. For cells anchored in a tissue, like the epithelial cells lining our air passages, this moves liquid over the surface of the cell (e.g., driving particle-laden mucus toward the throat).
Boiling water because it’s more obvious
#1...<span>Mixture; compounds; elements
#2...Protons
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Chunky peanut butter is an example of a heterogenous mixture.