Ecosystems

5. all the living and nonliving things in an environment and their interactions with each other
7. a sandy or rocky biome with little precipitation and little plant life
8. all the members of one species in an area
9. a cool forest biome of conifers in the upper Northern Hemisphere
10. the role of an organism in an ecosystem
12. the struggle among organisms for water, food, and other needs
14. too many of at least one kind of living thing in an area compared to the available resources
15. a treeless biome in the arctic regions
16. a biome where grasses, not trees, are the main plant life
17. the adding of harmful substances to the water, air, or land

1. a biome with many kinds of trees that lose their leaves each autumn
2. all the living things in an ecosystem
3. to use something that would be waste to create a new product
4. the wise management and use of natural resources
6. the process by which new plant and animal populations replace old plant and animal populations over time
9. a hot biome near the equator that has much rainfall and a wide variety of life
11. the study of how living and nonliving things interact
13. the process of restoring areas of forest that once existed but were removed or destroyed