Carbon dioxide, Plants absorb _______ during photosynthesis, Carbon footprint, Is a measurement of the amount of carbon dioxide that someone's activities produce, Energy efficient, Using little electricity, gas, etc., Environmentally friendly, There is no charge for vehicles that are __________, Exhaust fumes, Gases from a vehicle engine, Global warming, 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, Greenhouse gas, We need a global system for limiting _____________ emissions, Renewable, Relating to forms of energy that are produced using the sun, wind, etc., Solar power, Electricity produced by using the energy from the star that provides light and heat for the earthsun, Wind power, Electricity produced using air turbines.

Unit 16

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