Reproductive System
What are the two categories of reproduction
Asexual and sexual
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 :(
What is the difference between external and internal fertilisation?
Fertilisation is when the egg and sperm (gametes) combine
External happens outside the body, internal happens inside.
What is the word equation for photosynethsis?
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
The main function of the ovaries is...
To produce eggs
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 difference between an r- and k- strategist
r-strategist: produce lots of offspring; low parental care
k-strategist: produce few offspring; high parental care
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
What is the role of a pollinator?
To assist in transporting the pollen (male gamete) from the anther to the ovary (female gamete) in the stigma of another plant.
Which part of the cell does respiration occur in?
The mitochondria
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.