It would be epithelial tissue that covers it.
The pores on the outer layer of the sponge which takes is water are called POROCYTES.
Sponges are groups of very simple animals which usually grow at a spot, that is, they lack the ability to move from one place to another. There are about 10,000 species of sponges; most sponges live in salt water while some live in fresh water. The body surface of sponges are made up of holes through which water enter into their cells.
Answer:
electrons have negative charge
Answer:
C. It is strongest at the <em>magnetic fields</em>
Explanation:
"The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center."