Answer:
Instead of a brain, echinoderms have a ring of nerves located around their mouth area that governs their nervous responses. This ring coordinates their motion, their eating, basically anything that requires nerve control.
Explanation:
Answer:
animals get energy indirectly from the sun
Explanation:
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B. The thinner a wire is, the more resistance is will have.
Answer:
The shape of the most apical layer of cells, closest to the free space.
Explanation:
Plicae, villi and microvilli increase the surface area for he absorption of nutrients