Geography Flashcards
What are two pieces of evidence used to define the Anthropocene?
Columbia’s exchange theory.
Nuclear weapon testing theory.
What is the Anthropocene?
A time during which humans have substantial impact on our planet.
What is the greenhouse effect?
The way in which heat is trapped close to Earths surface by greenhouse gases
What are the main greenhouse gases?
Carbon dioxide, Methane, nitrous oxide and fluorogases.
What is the enhanced greenhouse effect?
Where extra greenhouse gases in our atmosphere trap too much of the Suns energy.
What is the Colombian exchange Anthropocene?
-New world species ‘maize+potatoes’ brought to the Americas causing a irreversible change in pollen records around the world
-new diseases such as smallpox were also brought over causing 50 million Indigenous Americans to die.
What was the nuclear testing Anthropocene?
Nuclear material enters atmosphere and eventually falls to the ground, increasing worldwide radiation levels affecting bones, tissue of organisms
What percentage of greenhouse gases does carbon dioxide take up?
75%
What is carbon dioxide’s greenhouse strength?
1
Where does carbon dioxide come from?
-deforestation
-burning fossil fuels for electricity
-burning fossil for transport.
What percentage of greenhouse gases does nitrous oxide take up?
6%
What is nitrous oxide’s greenhouse strength?
600
Where does nitrous oxide come from?
-Agriculture
-Burning fossil fuels
What percentage of greenhouse gases does flourogases
2%
What is flourogases greenhouse strength?
10000
Where do flourogases come from?
Am made gases used in aerosol cans and refrigerators
Which countries produces the most greenhouse gases?
Quatar
UAE
USA
What is an ecosystem?
A natural system made of living things.
What is a biome?
An ecosystem on a global scale.
What are the main threats to the rainforests
Logging,palm oil harvesting, farming
Name a country in South Asia
Sri Lanka
Name a country in west Asia
Baharain
Name a country in north Asia
Russia
Name a country in east Asia
China
