The Biological Concept of Species Is Defined as a Group

question 43

Multiple Choice

The biological concept of species is defined as a group that

• A) bears distinct characteristics that make it different from other groups.
• B) has a unique feature shared by all members of the group by not by any other groups.
• C) only breeds among the group and does not seek to breed with other groups.
• D) shares a unique ecological niche not exploited by any other groups.

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Definitions:

Billion Years

A time scale used in geology and astronomy to describe events or processes that happened a billion years ago or the age of geological formations.

Isotopic Age

The determination of the age of a mineral, rock, or geologic event based on the ratio of parent isotopes to daughter isotopes within a given system.

Geologic Timescale

A dating system used chronologically by geologists and other scientists to detail the timing and relationships of historical events on Earth.

Unconformity

A geological feature that represents a gap in the geological record, marking a period where deposition stopped, eroded, then resumed.