HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.

4 0

3 years ago

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RISKY RISKY WIGGY WIGI THIS IS AN EMERGENCY!!

kolbaska11 [484]

Answer:

option c is correct

Explanation:

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7 0

3 years ago

the _ regulates public drinking water, and approves pesticides and other chemicals used in the environment.