If an agent is transferred from an infected person to another person without an intermediate object, substance or space, it is said to be _____ transmission.

Fill in the blank(s) with the appropriate word(s).


direct

Biology & Microbiology

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An egg with 22 chromosomes that is fertilized by a normal sperm will result in

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Light serves two important functions for life on Earth. What is light's one source that sustains life, and what information does it provide organisms with?

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