Which statement best describes the composition and function of proteins in organisms? a) long chains of hydrocarbons used for digestion and respiration b) sugars and starches that provide energy for metabolic processes c) fats and oils which are well suited for long term energy storage d) long chains of amino acids used for building, repair, and maintenance

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called

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.