Earth Day

3. An underground layer of water-bearing permeable rock, gravel, sand, or silt from which groundwater can be extracted.
4. Energy derived directly from the sun.
5. The vast variety of life in the world or in a particular habitat or ecosystem.
6. The specific technology used in solar panels that converts sunlight directly into electricity.
11. To consciously use less of a resource (like office paper or water) to prevent depletion.
13. Extremely small pieces of synthetic debris resulting from the disposal and breakdown of consumer products and industrial waste.
15. A type of renewable energy extracted from the sub-surface heat of the earth.
17. A deceptive marketing spin used to persuade the public that an organization's products, aims, or policies are environmentally friendly.
18. The long-term capture and storage of carbon dioxide from the atmosphere to mitigate global warming.

1. An odor-free, indoor-friendly waste disposal method that relies on the digestive power of earthworms to break down organic matter.
2. The third rock from the sun, and the one we are celebrating today!
7. Decayed organic material, like food scraps from the breakroom, used as a rich plant fertilizer.
8. A powerful type of renewable energy generated by air currents.
9. An approach to land management and agricultural design that intentionally mimics the patterns and relationships found in natural ecosystems.
10. A natural home or environment for an animal, plant, or other organism.
12. The process of converting waste materials into new materials and objects.
14. A gas in the atmosphere that protects everything on Earth from harmful ultraviolet rays.
16. A transparent, endlessly reusable alternative to single-use plastic bottles.