Biosphere- Human Impact Flashcards
How is respiration affected by temperature
Respiration will increase when the temperature increases
What is the main process by which humans have affected the carbon cycle
Fossil fuel burning
What percentage of the biosphere is directly affected by human activity
83%
What percentage of land area is used to feed the population
36-40%
Since 1970 how much of the amazon has been deforested
700,000 km2
What is a climate envelope
Is the range of climatic conditions that a species is found in
Rates of extinction depend on
Rates of climate change
Rates of dispersal
What impact does habitat fragmentation have on mitigation rates
It reduces mitigation rates
Example of scheme trying to reduce emissions from deforestation and land use change
UN REDD+ scheme
Human influences on the nitrogen cycle
Agriculture
Haber Bosch cycle (main process for the production of ammonia)
Power stations
How does nitrogen cause acid rain
When nitrogen oxides dissolve in rainwater they produce nitric acid (acidification)
