Herd Immunity

question 66

Multiple Choice

Herd immunity

• A) only occurs in a population in which all individuals are immune.
• B) occurs in a population in which a large percentage of the population is immune.
• C) only provides protection to those that are already immune.
• D) is responsible for dramatic increases in childhood diseases.
• E) occurs in a population in which a large percentage of the population is immune AND is responsible for dramatic increases in childhood diseases.

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Definitions:

Coral Bleaching

occurs when corals lose their vibrant colors due to stress factors such as increased temperatures, leading to a weakened state with reduced growth and reproductive ability.

Zooxanthellae

A type of microscopic algae living symbiotically within the cells of coral and other marine organisms, providing them with energy through photosynthesis.

Euphotic Zone

The upper layer of a body of water, such as an ocean or lake, that is illuminated by sunlight and supports photosynthesis.

Zooplankton

Small floating or weakly swimming organisms that are a component of the aquatic food web.