A gradual increase in world temperatures caused by gases such as carbon dioxide that are collecting in the air around the earth and stopping heat escaping into space
Global Warming
A long period when there is little or no rain
Drought.
Able to decay naturally and in a way that is not harmful
Biodegradable
It is a mixture of solid particles and gases in the air.
air pollution
Things such as minerals, forests, coal, etc. that exist in a place and can be used by people
Natural resources.
The process of getting rid of large amounts of rubbish by burying it, or a place where rubbish is buried
Landfill
Substances that are used in or produced by a reaction involving changes to atoms or molecules and are harmful for health.
Toxic Chemicals
Not harmful to the environment
Environmentally-friendly.
Relating to products, systems, etc. that use as little electricity, gas, etc. as possible
energy-saving
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