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Answer:
In the 19th century, scientists realized that gases in the atmosphere cause a "greenhouse effect" which affects the planet's temperature. These scientists were interested chiefly in the possibility that a lower level of carbon dioxide gas might explain the ice ages of the distant past.
Scientists discovered that the addition of carbon dioxide to the atmosphere increases the green house effect and affects Global warming.
What is Greenhouse effect ?
Green house is a term used to define the ability to store heat energy released by the sun.
Since plants require CO2 for growth, this means that it is one of the green house gases.
What is Global Warming
Global warming refers to the overall increase in the temperature of the earth resulting from the greenhouse effect which is caused by elevated levels of CO2 and chloroflourocarbons.
Learn more about Global warming at https://brainly.com/question/3553382
