Unlike with animals, artifacts in the fossil record of bacteria and archaea offer very little information for analysis. Fossils of ancient prokaryotes look like tiny bubbles in rock. How might scientists investigate their evolution and diversity in view of this challenge?

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change.

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

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance