About 500,000 years

About 160,000 years

About 500 years

A thin layer of gases extending 100km above the Earth's surface.

A layer of CO2 above the Earth's surface.

A layer of gases extending 2000km above Earth's surface.

A measure of the greenhouse effect caused by each gas in the atmosphere relative to the same amount of CO2 over a given time period.

A measure of the greenhouse effect of CO2, compared to other gases.

A measure of the greenhouse effect of CO2 and O2 combined.

Oxygen

Nitrous Oxide

Methane

Nitrogen

Carbon Dioxide

Argon

Incomplete combustion of fossil fuels.

In faeces

By aerobic decomposition of organic matter.

By anaerobic decay of organic matter in waterlogged conditions.

In the digestive systems of animals such as cattle.

By using it in factories more.

By using it as a biofuel

By recycling more

O2 + H2O

CO2 + H2O

CO2 + O2

Because people don't know anything about the climate system.

Incomplete knowledge about how climate systems work on our planet.

Because there is no correlation between CO2 and increasing temperatures.

Scientific methods can only disprove a theory.

We have a right to choose to use fossil fuels.

We have a duty to allow others to improve their living conditions even if it leads to industrialisation.

We have a duty to preserve environment for next generation.

We have a duty to release as little fossil fuels as possible.

Ultraviolet

Infrared

When there are annual fluctuations on a graph we can ignore them and draw a smooth line of best fit.

The idea that there will be fluctuations in temperature due to seasonal changes.

We must consider all fluctuations in temperature.

Present trends will continue for a period of time.

The data plotted on the graph is inaccurate.

We have enough data to establish the trend accurately.

We don't have sufficient understanding of all factors affecting climate change.

Previous data is 100% accurate.

Failure to include all factors in one model.

We don't know anything about the greenhouse gases.

Previous data is inaccurate.

Limited understanding and knowledge.

Limitations in computing