Earth Day

3. Species that normally live and thrive in a particular ecosystem
5. A natural resource that is not replaced in a useful time frame
8. The process of making new products from materials that were used in another product
9. A day created in 1970 about celebrating and caring for the Earth
10. A process that allows the organic material in solid waste to be decomposed and reintroduced into the soil, often as fertilizer
13. A method of resource conversation that involves using products more than once
14. The number of people (or other animals) in an area exceeds the capacity of the environment to support life at a decent standard of living.
15. A group of similar organisms that can mate with each other an produce fertile offspring

1. A mixture of gasses that surrounds our planet; can be polluted from exhaust from vehicles or factories
2. Convert wast into reusable material
4. To use less of something, such as carpooling or limited how many plastic bottles you use
6. Release of harmful materials into the environment
7. An area that provides an organism with its basic needs for survival
11. The excessive use of material things, including food and natural resources
12. A layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the Sun