Burning fossil fuels has changed the atmosphere by producing a hole in the ozone.

increasing the concentration of carbon dioxide.

increasing the concentration of ozone in the atmosphere.

reducing the CFC's in the atmosphere.

ans 1. When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming. Already the average global temperature has increased by 1

Ans.2The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons), referred to as ozone-depleting substances (ODS).

Ans3.Rising carbon dioxide concentrations will increase plant growth. More rapid leaf area development and more total leaf area could translate into more transpiration. Rising carbon dioxide concentrations will decrease leaf stomatal conductance to water vapor. This effect could reduce transpiration.

Ans.4.Many factors impact ground-level ozone development, including temperature, wind speed and direction, time of day, and driving patterns

And.5.Buy air-conditioning and refrigeration equipment that do not use HCFCs as refrigerant. Buy aerosol products that do not use HCFCs or CFCs as propellants. Conduct regular inspection and maintenance of air-conditioning and refrigeration appliances to prevent and minimize refrigerant leakage.

increasing the concentration of carbon dioxide.

Explanation: Burning of fossil fuels, like gasoline, causes atmospheric change by increasing the concentration of carbon dioxide.

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the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation: