Across
- 5. s any type of energy generated by the sun.
- 6. the complex of physical, chemical, and biotic factors that act upon an organism or an ecological community and ultimately determine its form and survival.
- 7. substances released into the air and are measured by their concentrations, or parts per million, in the atmosphere
- 9. made of the layers of gases surrounding a planet or other celestial body
Down
- 1. the natural process of recycling organic matter, such as leaves and food scraps, into a valuable fertilizer that can enrich soil and plants
- 2. site where garbage is layered with dirt and other absorbing material to prevent contamination of the surrounding land or water.
- 3. an ecological community comprised of biological, physical, and chemical components, considered as a unit.
- 4. plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground.
- 8. the study of organisms and how they interact with the environment around them.
- 10. the introduction of harmful materials into the environment.