Why Is It So Difficult to Estimate the Current Extinction

question 25

Multiple Choice

Why is it so difficult to estimate the current extinction rate?

• A) There are 100 million named species.
• B) Beetles go extinct more rapidly than other species.
• C) Nematodes are so abundant.
• D) The fungi bias our samples.
• E) none of the above

---

Definitions:

Natural Selection

The process whereby organisms better adapted to their environment tend to survive and produce more offspring.

Genetic Variations

Differences in DNA sequences among individuals, which contribute to the diversity of traits and characteristics within a population.

Adaptive

Refers to changes or adjustments in behavior, physiology, or structure that make an organism more suited to its environment.

Linkage Studies

Genetic research methods that aim to find the location of specific genes by studying patterns of inheritance in families.