Global warming & carbon cycle

Global warming & Carbon cycle

Multiple Choice

What is Global Warming?

• Increasing temperature in Earth's atmosphere

• Decreasing temperature in a city

• Increasing rain rates in Earth

• Decreasing temperature rates

Multiple Choice

What are the main greenhouse gases?

• Carbon dioxide, nitrous dioxide, methane, water vapour

• Carbon dioxide, Water, Nitrous dioxide

Multiple Choice

Burning fossil fuels is one of the main causes for global warming.

• True
• False

Multiple Choice

Global warming is caused by a phenomenon known as the greenhouse effect.

Carbon cycle

Carbon dioxide in the air

Taken in by plants.

Eaten by animals (Animals return carbon during respiration)

Animals die (Decomposers return carbon)

Fossil fuels (burning -combustion)

Carbon footprint

• measure of the impact that all your activities have on the environment

• amount of greenhouse gases

• The world average is 4tonnes of carbon dioxide/person/year

Multiple Choice

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Multiple Choice

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

Multiple Choice

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Multiple Choice

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus