Crossword time!!

2. Organisms that break down dead matter, returning nutrients to the ecosystem.
4. The presence of harmful substances in the atmosphere.
6. The average weather conditions in an area over a long period of time.
11. The scientific study of the relationships between living organisms and their environment.
12. The preserved remains or traces of ancient organisms, often found in rock layers.
14. The total amount of greenhouse gases emitted by human activities.
15. The protective layer in the Earth's atmosphere that absorbs harmful UV radiation.
16. Marine structures made from calcium carbonate produced by corals.

1. Organic material used as a source of energy, often from plants or waste.
3. The process where water bodies become enriched with nutrients, leading to excessive growth of algae.
5. A building or structure used to grow plants by trapping heat from the sun.
7. Energy-efficient light sources that use semiconductors to produce light.
8. A body of permeable rock that stores groundwater, often used as a water source.
9. FRONT A weather system where cold air displaces warmer air, often bringing storms.
10. Explosive bursts of energy from the sun that can affect satellite communications.
13. Energy derived from the heat stored beneath the Earth's surface.