Samples of blood were mixed with different sodium chloride solutions. In one concentration of sodium chloride, the red blood cells were observed to maintain their normal shape. In another concentration of sodium chloride, the red blood cells were observed to swell and burst. The cells which maintained their normal shape were in a state of homeostasis.

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 is the period of cell life when it is conducting

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.