Adam ia trying to identify a solid he places a small amount of the substances in acid solution and observes wheter or not reacrion rakes olace this twst is based on a property

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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.

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review