1. This word starts with a "P." It is the name of a large object in space that orbits the Sun. The Earth is the only one of these on which we can live. What is it? _______________

2. This word starts with an "E." It is the word that describes our surroundings - the air we breathe, the water, plants, animals and the Earth itself. What is it? _______________

3. This phrase starts with an "E." Many plant and animal groups are close to becoming extinct. What is the word that describes them? _______________

4. This word starts with an "E." We get most of this directly from the Sun, but we also generate it using coal, nuclear generators, hydro-electric plants, and the wind. What is it? _______________

5. This word starts with an "R." When we re-use items, we can help the environment. Used paper can be made into new paper, metals and glass can be re-used also. What is the term for this? _______________

6. This word starts with an "R." It is a warm, moist area that is rich in plant and animal life. This biome is important for the health of the entire Earth. What is it? _______________

7. This word starts with an "A." It is a type of polluted precipitation (moisture falling from the sky) that causes erosion and corrosion. What is it? _______________

8. This word starts with an "A." It is another name for the air that surrounds the Earth. What is it? _______________

9. This word starts with a "W." It is a very important substance for all living things. When it becomes polluted, many living things suffer. What is it? _______________

10. This phrase starts with a "W." It is the name of a process that recirculates an important substance from the Earth to the sky and back again. What is it? _______________

11. This word starts with a "W." It is the name of the state that the outdoors is in, like how hot or cold it is, or if it is raining or snowing. What is it? _______________

12.This word starts with a "W." It is the name for animals and plants that live in their natural habitat. What is it? _______________

13. This word starts with a "C." It is a rich, soil-like substance that is formed when we recycle plant material. What is it? _______________

14. This word starts with an "H." It is the type of place where a plant or animal lives. What is it? _______________

15. This word starts with a "B." It is the name for the natural environment in a particular climate where many plants and animals live. What is it? _______________