In Comparison to Past Estimates, Extinction Rates Are Currently High

question 11

Multiple Choice

In comparison to past estimates, extinction rates are currently high. Which of the following is the most plausible explanation?

• A)Natural fluctuations in climate causes extinctions.
• B)Continental drift is causing rapid changes in climate, which, in turn, causes extinctions.
• C)Previous extinctions make survival of contemporary species more difficult.
• D)Humans are affecting many aspects of the global environment.

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Definitions:

Hippocampus

A critical region of the brain associated with memory formation, organization, and storage.

Limbic System

The limbic system is a complex set of brain structures located on both sides of the thalamus, directly beneath the cerebrum, involved in various functions including emotions, behaviors, motivation, long-term memory, and olfaction.

Hippocampus

An area in the brain linked with the creation, structuring, and preservation of memories.

Explicit Memories

Recollections involving facts and events that one is able to bring back into conscious thought.