(4.9.2)(Carbon dioxide and methane as greenhouse gases)

What do greenhouse gases do?

Greenhouse gases in the atmosphere maintain temperatures on Earth high enough to support life.

What are the 3 green house gases?

Water vapour, carbon dioxide and methane are greenhouse gases.

What are two human activities which carbon dioxide and methane are increased because of?

Methane - Agriculture and fossil fuels.

Carbon dioxide - Deforestation and burning of fossil fuels.

What is the main cause of climate change?

Global temperatures increasing.

What are 4 effects of climate change?

Hotter temperatures, More severe storms, More droughts, Rising sea levels.

What is carbon footprint?

The carbon footprint is the total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event.

How can you reduce carbon footprint?

The carbon footprint can be reduced by reducing emissions of carbon dioxide and methane.

What are 3 ways to reduce carbon footprint?

• Maximise the efficiency of your energy use.

• Minimise your waste.

• Using renewable energy sources as an alternative to burning fossil fuels.