what environmental challenges did multicellularity meet and over come by this innovation ? What opprorunities were opened for the organisms that made this innovation?

a metamorphic rock would be formed.

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.