What Are the Three Observations of Natural Selection

question 22

Multiple Choice

What are the three observations of natural selection?

• A) Species change and adapt based on environmental pressure, individuals change within their lifetime, and offspring inherit the changes.
• B) Genetic drift, gene flow, and mutations provide the change necessary in populations that affect future generations.
• C) Organisms produce more offspring than survive, populations vary, and traits are inherited.
• D) The number of adults tends to remain the same over time, inheritance provides all of the genetic variation needed for future generations, and natural selection works on only the best of those adults in each generation.

---

Definitions:

Sexual Education

The comprehensive teaching of sexual health topics, including anatomy, reproduction, sexual behavior, relationships, and safe sex practices, intended primarily for adolescents.

Eradicated

Completely destroyed or removed; often used in the context of eliminating a disease.

Edward Jenner

An English physician known for his pioneering work in developing the smallpox vaccine, the world's first vaccine.

D.A. Henderson

An American medical doctor and epidemiologist known for leading the World Health Organization's effort to eradicate smallpox.