Which of the Following Is NOT Necessarily True of a Planet

question 46

Multiple Choice

Which of the following is NOT necessarily true of a planet?

• A) It orbits a star.
• B) It is nearly spherical in shape.
• C) It has one or more moons.
• D) It has cleared its neighborhood of other objects.

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Definitions:

Independent Variable

The variable in an experiment that is manipulated or changed to explore its effect on the dependent variable.

Neurotransmitter

Chemicals in the nervous system that transmit signals across a synapse from one neuron to another, influencing a wide range of bodily and psychological functions.

Dopamine

A neurotransmitter involved in many functions, including mood, sleep, learning, and the pleasure-reward system.

Serotonin

A neurotransmitter that is involved in many functions in the body, including mood regulation, digestion, and sleep.