8. which would most likely happen if too many nutrients entered an estuary? a. nutrients would be used up by…

8. which would most likely happen if too many nutrients entered an estuary? a. nutrients would be used up by the fish and plants, leaving the estuary healthy. b. algae blooms would lower dissolved oxygen levels, causing fish to suffocate. c. algae blooms would increase, leaving too much food resources for fish. d. nutrients would sink to the bottom, increasing soil absorption. 9. the diagram shows layers of rock below the earths surface. which statement below is true concerning the above image? a. fossils found in layer 4 are older than fossils found in layer 5. b. layer 1 is the youngest layer shown. c. the fossils found in layer 2 and layer 3 are from the same approximate age. d. the absolute age of a rock or fossil can be found by comparing it to other rocks.

8. which would most likely happen if too many nutrients entered an estuary? a. nutrients would be used up by the fish and plants, leaving the estuary healthy. b. algae blooms would lower dissolved oxygen levels, causing fish to suffocate. c. algae blooms would increase, leaving too much food resources for fish. d. nutrients would sink to the bottom, increasing soil absorption. 9. the diagram shows layers of rock below the earths surface. which statement below is true concerning the above image? a. fossils found in layer 4 are older than fossils found in layer 5. b. layer 1 is the youngest layer shown. c. the fossils found in layer 2 and layer 3 are from the same approximate age. d. the absolute age of a rock or fossil can be found by comparing it to other rocks.

Answer

Brief Explanations:

For the first question about estuary, excess nutrients cause algal blooms which deplete oxygen and harm fish. For the rock - layer question, in undisturbed rock layers, lower layers are older. Here, layer 1 is the top - most layer and thus the youngest.

Answer:

  1. C
  2. B