To make a waste product usable again.
Recycle.
To make something smaller in amount, degree or price.
Reduce.
To use something again, usually for a different purpose.
Reuse.
A piece of land under which waste material is buried.
Landfill.
A permanent change in global or regional climate patterns.
Climate change.
The typical weather conditions of a particular region.
Climate.
Damage caused to water, air, etc. by harmful substances or waste.
Pollution.
A substance or compound produced or used in a process involving chemistry.
Chemical.
Materials that have no use and are unwanted.
Waste.
To break down or decompose naturally.
Biodegrade.
Related to the connection between animals, plants, and humans, and their environment.
Ecological.
The natural world around us where people, animals and plants live.
Environment.
