The Hydrogen and Helium in Our Solar System Were Created

question 107

Multiple Choice

The hydrogen and helium in our solar system were created from subatomic particles about ____________ years ago.

• A)14 billion
• B)10.5 billion
• C)7.0 billion
• D)4.5 billion

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Definitions:

Group Therapy

A form of psychotherapy where one or more therapists treat a small group of clients together, exploring shared issues and dynamics.

Operant Behavior

A method of learning that employs rewards and punishments for behavior, emphasizing the effects of external stimuli on behavior.

Respondent Behavior

Behavior that occurs as an automatic response to a certain stimulus.

Explorative Behavior

Actions taken to gather information about one's environment or to learn new things through direct experience.