What Is "Dark Energy

question 116

Multiple Choice

What is "dark energy"?

• A) The energy associated with the matter that has fallen into a black hole
• B) The matter-energy needed to bridge the gap between the energy we see or infer and the energy needed to make the universe flat
• C) The energy associated with "dark matter"
• D) The unseen matter-energy needed to make the observed curvature of space spherical (as we believe it should be),whereas the observed matter-energy only makes it hyperbolic

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Definitions:

Voluntary Movements

Movements that are consciously controlled by the brain, involving motor planning and execution.

Acetylcholine

A neurotransmitter in the nervous system involved in muscle activation, memory, and learning.

Muscles

Tissues in the body that have the ability to contract, enabling movement of the body and its parts.

Neurotransmitter

Chemical messengers that transmit signals across synapses from one neuron to another in the brain and nervous system.