If a volcano ..., it suddenly throws out smoke, fire, and melted rocks.
erupts
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to make something dirty or poisonous
contaminate
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... refers to resources or energy sources that can naturally replenish over time, making them sustainable
Renewable
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energy that is produced by dividing atoms
atomic energy
15
the gradual warming of the Earth's surface caused by an increase in pollution and gases in the air
greenhouse effect
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a measurement of the amount of carbon dioxide produced by the activities of a person, company, organization, etc.
carbon footprint
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serious problems that are being caused or likely to be caused by changes in the world's weather, in particular the world getting warmer as a result of human activity increasing the level of carbon dioxide in the atmosphere
climate crisis
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fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago
fossil fuel
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energy that uses the power of the sun to produce electricity
solar energy
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a natural event such as a flood, earthquake, or tsunami that kills or injures a lot of people