ASAP HELP PLSSS What makes cnidarians different from sponges?

A. Cnidarians have cells that are organized into tissues

B. Sponges are multicullular

C. Sponges are not mobile

D. Cnidarians are multicellular

On his trip to the galapagos islands, darwin determined that animals on the islands

To test the responsiveness of the kidneys, scientists have designed an experiment tracking urine output of people during a normal day, while regulating the in-take of water by mouth. what would be an appropriate hypothesis for this experiment?

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water