Photosynthesis
This gas is taken in by plants during photosynthesis and released by animals during respiration.
The carbon cycle is....
How carbon is cycled between the 4 spheres on Earth.
What is a greenhouse gas?
Gases that trap heat in the atmosphere
Name one way humans effect the carbon cycle
Deforestation, burning fossil fuels, transport etc.
Is Australia on track to meet its target as part of the Paris Agreement?
No :(
During photosynthesis, plants convert carbon dioxide and water into glucose and oxygen. What form of energy powers this process?
Light energy from the sun
A carbon sink is...
any system that absorbs more carbon dioxide from the atmosphere than it releases
Name two greenhouse gases
Methane, carbon dioxide, nitrous oxide
Combustion
What is the Kyoto Protocol?
An acknowledgement that global warming exists and is caused by humans
What would happen to Earth’s oxygen levels if all photosynthesis stopped
They would go down
Name two ways that CO2 is released into the atmosphere.
Respiration (animals and plants), combustion of fossil fuels.
What is the most abundant greenhouse gas?
CO2
Why have the number of bushfires increased in the past century?
Global warming = more droughts = dryer land = more fires
Describe what a carbon tax is
A fee is charged for each tonne of carbon emitted by a business
What is the word equation for photosynethsis?
What is a carbon footprint?
The amount of CO2 released per person/business/household in a period of time
What is a difference between the natural and enhanced greenhouse effect?
Natural: heat is trapped in the atmosphere. Occurs regardless of humans
Enhanced: more heat is trapped because of human greenhouse gas emissions
List 3 ways that farming adds greenhouse gases into the atmosphere?
1. Deforestation for grazing land
2. Respiration
3. Combustion of fuels for transport and farming
4. Methane from cow burps and farts
What is a carbon trading scheme?
•Each business is allowed to release a predetermined amount of carbon emissions
•Carbon credits are earned if a business releases less carbon than allocated
•These businesses can sell their credits to businesses that release more carbon than allocated
Which part of the cell does respiration occur in?
The mitochondria
This process removes carbon dioxide from the atmosphere and stores it for long periods underground or in oceans, sometimes through human intervention. It can occur naturally in rocks and soils or artificially through technologies designed to slow climate change.
Carbon sequestration
What are 3 ways that humans contribute to the enhanced greenhouse effect?
1. Increased farming
2. Combustion of fossil fuels
3. Emissions from petrol transport
What are the two ways that deforestation increases CO2 in the atmosphere?
1.Less trees means less CO2 is taken in from the atmosphere
2.Trees release CO2 when cut down
How are scientists reducing the methane produced by cows?
Scientists are working to modify the bacteria found in cows’ guts that produce methane.