Were the Extinctions That Occurred in the Last Ice Age

question 48

Multiple Choice

Were the extinctions that occurred in the last ice age more frequent among species of animals with large body sizes? A researcher gathers data on the average body mass (in kilograms) of all species known to have existed at that time. What are the explanatory and response variables?

• A) There is no explanatory-response distinction in this situation.
• B) Explanatory: body mass of a species. Response: whether the species went extinct.
• C) Explanatory: the ice age. Response: whether a species went extinct.
• D) Explanatory: whether a species went extinct. Response: the body mass of the species.
• E) Explanatory: the ice age. Response: the body mass of a species.

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Definitions:

Income

The money received, especially on a regular basis, for work or through investments.

Opportunity Cost

The price paid for not choosing the next most favorable option when deciding or picking between different possibilities.

Term Deposit

A bank deposit with a fixed term and typically a fixed rate of interest, where withdrawal can only occur after the term ends without penalty.

Holding Cash

The practice of keeping money in the form of physical currency as a store of value or for transactions.