Which One of the Following Is a Pure Substance

question 22

Multiple Choice

Which one of the following is a pure substance?

• A)tap water
• B)rock
• C)air
• D)elemental oxygen
• E)apple

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Definitions:

Natural Selection

A fundamental mechanism of evolution, where organisms better adapted to their environment tend to survive and reproduce, passing on advantageous traits.

Joint Evolution

The process by which two or more species evolve in response to each other, influencing each other’s evolutionary pathway.

Binary Influence

A concept that deals with dualistic effects or the impact of two different forces or factors in a given situation.

Genetics

The branch of biology that studies genes, genetic variation, and the inheritance of characteristics in biological organisms.