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<span>B. They used shape and color to create a sense of unity.
C. They created flattened spaces in their compositions .
</span><span>E. They used similar values to minimize contrast.</span>
Explanation:
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Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.
