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Slogan of microalgae pollution control
(2) The reason why hydrogen is the cleanest fuel is because the products of combustion are only water and there is no pollution.
Hydrogen-powered cars are not popular at present because they are not easy to store.
Two. (1) The main source of carbon dioxide in the air is the combustion of fossil fuels.
Algae "microalgae" have a strong ability to absorb carbon dioxide. It absorbs carbon dioxide through photosynthesis.
(2) The development and utilization of new energy sources such as solar energy and wind energy can alleviate the increase of CO2 content in the atmosphere.
Three. Water saving: flush the toilet with vegetable washing water.
Prevention of water pollution: industrial wastewater is discharged after treatment.
Ⅳ. Feeling: It is urgent to protect the environment.
(2) Suggestions are: reduce the burning of fossil fuels and develop and utilize new energy sources.
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