How Extensive Are the Effects of Human Activities on the Planet

question 60

Multiple Choice

How extensive are the effects of human activities on the planet?

• A) Humans have indirectly affected about 75% of the earth's land surface.
• B) Humans have caused great harm in the world's oceans, but not so much on land surfaces.
• C) Humans have directly affected about 75% of the earth's land surface.
• D) Humans have directly affected about 83% of the earth's land surface, including Greenland and Antarctica.
• E) Humans have directly affected about 83% of the earth's land surface, excluding Greenland and Antarctica

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Definitions:

Stimulus Generalization

A process in conditioning where a response to a specific stimulus becomes associated with other stimuli that are similar to the original stimulus.

Poisonous Frog

A type of frog that secretes toxins through its skin as a defense mechanism against predators.

Classical Conditioning

A learning mechanism whereby two stimuli are regularly connected; the reaction, first triggered by the second stimulus, ends up being triggered by the first stimulus only.

Stimulus Generalization

A learning process in which a response to one stimulus becomes associated with other similar stimuli, leading to a similar response.