Natural Selection

question 36

Multiple Choice

Natural selection

• A) is the principle cause of extinctions.
• B) is the principle cause of evolutionary change.
• C) occurs only in gametes.
• D) cannot occur without genetic drift.

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Definitions:

Toxic Substance

A toxic substance is a chemical or compound that can cause harm to humans, animals, or the environment when ingested, inhaled, or comes in contact with skin.

Imminent Hazard

A situation that poses an immediate and significant risk to health, safety, or the environment.

Radioactive Materials

Substances that emit radiation as a result of the decay of their atomic nuclei.

Radiation Sickness

Illness and symptoms resulting from excessive exposure to ionizing radiation, affecting the body's cells and potentially leading to severe health issues.