When using a dichotomous key, what question about a specific characteristic would best help you distinguish between a goldfish and a snake?

A. Does the animal have scales on its body?

B. Does the animal have feet?

C. Does the animal have a mouth?

D. Does the animal breathe under water?

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation. a. false b. true