15 Greenhouse gases and the Carbon Cycle

Photosynthesis

________: the process of producing glucose and oxygen from carbon dioxide and water in plants in the presence of chlorophyll and light:

Water levels

________ will rise as glaciers melt because of high temperatures, causing flooding in low- lying countries.

Energy

________ is trapped inside the Earth's atmosphere by Greenhouse gases which can absorb and hold the radiation.

carbon dioxide

But some heat is absorbed by greenhouse gases such as ________ and methane and is trapped within the Earths atmosphere, keeping the Earth warm.

Sun emits

The ________ rays that enter the Earths atmosphere.

Sources

________: combustion of wood and fossil fuels, respiration of plants and animals, thermal decomposition of carbonate rocks and the effect of acids on carbonates.

presence of greenhouse

Caused by the ________ gases within our atmosphere, mainly methane and carbon dioxide.

atmosphere

In the ________, the main source of carbon is carbon dioxide.

Earth

When shortwave radiation from the sun strikes the ________ surface it is absorbed and re- emitted from the surface of the ________ as infrared radiation.

Respiration

________: the production of energy in living things.

concentration of greenhouse

As the ________ gases in the atmosphere increases due to human activity, more heat is trapped within the Earth's atmosphere causing the Earths average temperature to rise (global warming)

Sources

combustion of wood and fossil fuels, respiration of plants and animals, thermal decomposition of carbonate rocks and the effect of acids on carbonates

Main reason for increasing levels

combustion of fossil fuels increasing to meet our demands

Sources

digestive processes of animals, decomposition of vegetation, bacterial action in swamps, rice paddy fields and landfill sites

Main reasons for increasing levels

increase in animal farming, number of paddy fields and landfill sites

Combustion of fossil fuels, e.g

methane

Respiration

the production of energy in living things

Photosynthesis

the process of producing glucose and oxygen from carbon dioxide and water in plants in the presence of chlorophyll and light