Dark energy

A. is energy that exerts an outward pressure, causing spacetime to expand.
B. would be considered to be the opposite of gravity.
C. is the phenomenon responsible for the acceleration of the universe.
D. all of the above


Answer: D

Environmental & Atmospheric Sciences

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What happens to rising air?

A. Cools adiabatically B. Does not change temperature adiabatically C. Warms adiabatically

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The United States is NOT a good example of a nation state

Indicate whether this statement is true or false

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The structure that helps neurons transmit action potentials more quickly is a

A. dendrite. B. cell body. C. myelin sheath. D. synapse.

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