Answer:
They typically have a tough, spiny surface, which inspired their name (in Greek, echinos means “spiny” and derma means “skin”). They also have the unusual ability to regrow lost body parts, and sea stars and brittle stars can regrow arms if broken off or eaten
Explanation:
Answer:
A.it travels at a different speed
bisible energy from the sun is different from the non visible energy.
The magnification will provide better visibility and more detailed information.
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