| A | B |
|---|
| What is the major factor is soil formation? | climate |
| Describe a food chain on land. | plants eaten by small animals, small animals eaten by large animals |
| Describe a marine food chain. | small drifting plants eaten by small marine animals, small animals eaten by large |
| Name an animal at the top of a food chain on land. | humans |
| Name an animal at the top of a marine food chain. | fish, marine birds, marine mammals |
| Where is a forest biome found? | tropical rain-equator, temperate-middle latitudes, boreal-high northern latitudes |
| Where is a savanna biome found? | tropical regions between the rain forests and the deserts |
| Where is a grassland biome found? | middle latitudes between the temperate forests and deserts |
| Where is a desert biome found? | low and middle latitudes in desert climate regions |
| Where is a tundra biome found? | arctic regions, in the Antarctic, in high mountain elevations |
| Which biomes support little plant life? | desert and tundra |
| How is a coral reef formed? | old coral polyps die, their limestone skeletons serve as a platform on which new corals grow |
| Why would animal die without plants? | animals need oxygen and food provided by plants |
