MOST of the Mass of the Universe-98%-Is in the Form

question 77

Multiple Choice

MOST of the mass of the universe-98%-is in the form of:

• A) hydrogen and helium.
• B) nitrogen and oxygen.
• C) iron and silicon.
• D) hydrogen.

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Definitions:

B.F. Skinner

An influential American psychologist known for his work in behaviorism and the development of the theory of operant conditioning.

Common Traits

Characteristics that are shared by a group of people or are commonly found within a particular population or culture.

Intelligence

The ability to acquire knowledge, think abstractly, understand complex ideas, apply knowledge to manipulate one's environment, and learn from experience.

Gregariousness

The quality of being sociable, enjoying the company of others, and seeking social interaction.