Environmental studies

2. The surface on earth that has the highest Albedo/Reflects the most light
3. The fraction of light that a surface reflects
5. The group in an experiment that receives the variable being tested.
6. The factors that do not change during an experiment
9. The outermost shell of our planet
12. Participants who do not receive the experimental treatment.
14. This organization protects people and the environment from significant health risks, sponsors and conducts research, and develops and enforces environmental regulations.\
15. The sphere that contains all Biological life
16. a current in a fluid that results from convection found in the air, ocean, and mantle
18. this element composes bones, teeth and DNA,controls the pace at which algae and aquatic plants are produced
20. a liquid, about 2092 km thick, made up primarily of iron and nickel
21. The mostly solid bulk of Earth's interior

1. the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources.
4. this element Travels around earth into the atmosphere, helps hold heat
7. Are moved when Convection currents move underneath these.
8. The sphere in the sky
10. this element Consistent in all living matter,passes through every sphere of our earth
11. happens because they are over an extremely hot region of the mantle,
13. The sphere that includes the rocks and minerals on Earth
17. Earths layer that has extreme pressure crushing down on it, its tempature is as hot as the surface of the sun.
19. The Sphere that contains water