Answer:
Endoskeleton
Explanation:
An internal skeleton is called an endoskeleton, which is what vertebrates have. A sponge endoskeleton consists of short, sharp rods called spicules
Spicules are made of silica, calcium carbonate, etc.
Answer:
D
Explanation:
because mintochodria is the power house hence it provides energy to the cell
It could possibly harm other plants and if those plants become less and are a good source for animals, the animals would most likely die
Cytoplasmic uses actin and myosin for the movement of the cytosol which causes the organelles to move inside the cell.