a nucleolus is a small spherical structure found in the nucleus of a cell, it takes up about 25% the space in rhe nucleus and synthesises ribosome
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Correct answer - Relay.
Why? - The signal starts in a receptor which detects a change. Relay neurones carry nerve impulses within the central nervous system. Motor neurones carry nerve impulses away from the central nervous system. The neurone ends in either a muscle or gland, which are effectors.
Answer:
The eat plants and other animals