Index fossils are fossils that are preserved in the rock record of the Earth and are specifically found in a particular time period or environment. These fossils are also called, guide fossils. What can the index fossils tell you about the organisms in the layers of rock with therm, above them, or below them?

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

What is the purpose of presenting a false dilemma in a speech?