Answer the questions below in complete sentences. • In what layer does plasticity and convection occur?
• Which layer is thinnest under the oceans and thickest in the mountains?
• Which layer is made of solid iron?
• Which layer is the hottest? The coolest?

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.