Across
- 4. the circumstances or conditions that surround us
- 7. Theme of world environment dat 2021
- 8. The type of fuel humans depend on most. It is nonrenewable
- 10. The regions of the surface, atmosphere, and hydrosphere of the earth
- 11. _________ decreases the amount of organic waste that enters landfills
- 13. An international treaty giving countries a timeline to reduce their emissions of greenhouse gases. It has not been signed by the United States
- 15. This important layer of dirt is essential for ensuring plant growth and its nutrients are retained by trees. over time, it is washed away by agriculture
- 18. Methane, CO2, Hydrogen, and Fluorine are what type of gasses
- 19. More than half of the breathable oxygen in the world comes from where
- 21. The variety of life in the world or in a particular habitat
Down
- 1. a community together with its environment
- 2. makes up about one third of all plastic pollution
- 3. Sources that are caused or influenced by humans
- 5. Convert (waste) into reusable material
- 6. The most abundant energy source capable of being harnessed by humans
- 9. Air Pollution/Global Warming can cause ozone
- 12. Killing an animal out of season or without a license
- 14. One of the factors that causes global warming, desertification, and loss of topsoil. It is often a result of poor management of natural resources
- 16. Typical hazardous constituent of universal waste lamps and in seafood
- 17. Acid rain harms vegetation and _____ life?
- 20. Living within the limits of earth’s natural resources