Chapter 26: Evolution of the Atmosphere and Greenhouse Gases

________ also released nitrogen, which built up in the atmosphere over time, as well as water vapour and small amount of methane and ammonia.

________ like carbon dioxide, methane and water vapour act like an insulating layer in the Earths atmosphere.

________: fewer trees means less CO2 is removed from the atmosphere via photosynthesis.

When the ________ in the atmosphere condensed, it formed the oceans.

________: more farm animals produce more methane through their digestive processes.

Burning ________: carbon that was locked up in these fuels is released.

Some ________ affect the amount of greenhouse gases in the atmosphere.

________ and algae evolved and absorbed some of carbon dioxide so that they could carry out photosynthesis.

As well as absorbing the ________ in the atmosphere, green plants and algae produced oxygen by photosynthesis, this is when plants use light to convert ________ and water into sugars.

The ________ varies naturally, but recently the average temperature of the Earths surface has been increasing.

fewer trees means less CO2 is removed from the atmosphere via photosynthesis

carbon that was locked up in these fuels is released

more farm animals produce more methane through their digestive processes

more landfill sites and more waste from agriculture means more CO2 and methane released by decomposition of waste

greenhouse gas

________are absorbed by greenhouse gases

______linked to climate change

ice caps melting, change in rainfall patterns and change in temperature