<span>Sclerenchyma cells are the strongest. They have a second cell wallwhich is hardened by lignin, making them very tough and durable.</span>
The answer is a im pretty sure
Answer:
The answer is sponge
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An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion. Some atoms lose electrons and become positive ions. Others gain electrons and become negative ions.
Central nervous system. and automatically nervous system .it is mainly spinal cord system of the body.
