The answer is spicules. These
sharp-pointed structures are formed from calcium carbonate skeleton of
the organisms. They can also be formed from silica. They can be big (megascleres),
or microscopic (microscleres). Also dependent on the number of axis on the spicules, they are classified as monoaxon,
triaxon or polyaxon.
Hi!!
The answer is <span>They regulate water intake and excretion.
Hope this helps!
-Payshence xoxo</span>
The answer is C. Either B or b
Answer: Please refer to:
El metabolismo es el conjunto de reacciones químicas que tienen lugar en las células del cuerpo para convertir los alimentos en energía. Nuestro cuerpo necesita esta energía para todo lo que hacemos, desde movernos hasta pensar o crecer.
Explanation:
Not sure but hope it helps.
