A place where animals and plants are protected is an ecosystem
A phosphate group and single nitrogen containing based
Similarities:
They contain nematocyst (cells that sting)
some are sessil/free swimming
Some corals have a symbiotic relationship with algae, they need to grow in shallow waters so that light can penetrate for the algae to photosynthesize.
Answer:
4 Cornea
Explanation:
The cornea is the white cell covered your eyes