Which statement about the cell membrane is true? It contains cellulose and sugars that are involved in communication.
It is present in animal cells only.
It is rigid and elastic for supporting the cell’s shape.
It prevents harmful substances from entering a cell.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

occluded front i think

answer; synapse;