Which of the following are narrow blood vessels that restrict blood flow and have thin walls that allow gas exchange?

alveoli veins arteries capillarie

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

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.