03/23/18

Is the blood safe to use?

A person contracts hepatitis and recovers. Two years later the person donates blood. Is the blood safe to use?

03/23/18

Bacteria are _

A. consumers B. viruses C. producers D. autotrophs

06/04/14

Why do the antelopes in the meadow run in circles instead of running away when a gun is pointed at them?

Why do the antelopes in the meadow run in circles instead of running away when a gun is pointed at them?

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