The three-domain system recognizes fundamental differences between two groups of a. prokaryotes. b. eukaryotes. c. protists. d. multicellular organisms.

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

Explain what is meant by a river’s load, and describe how the load is carried.