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Chemical waste material capable of causing death or injury to life.
toxic waste
Economic development that is conducted without depletion of natural resources.
sustainable development
Energy from a source that is not depleted when used, such as wind or solar power.
renewable energy
A layer in the earth's stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
ozone layer
It's a process that occurs when gases in Earth's atmosphere trap the Sun's heat.
greenhouse effect
A gradual increase in the overall temperature of the earth's atmosphere.
global warming
A change in global or regional climate patterns.
climate change
The amount of carbon dioxide released into the atmosphere as a result of the activities of a particular individual, organization, or community.
carbon footprint


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