This substance is the universal solvent, it to make life possible on earth. most of earth is covered with the substance and your cells are made mostly of it as well. we need this substance to survive.

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

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan