C9 Flashcards
Why did co2 decrease
locked up in rocks
dissolved in oceans
what was the earths early atmosphere
early atmosphere was mostly co2 with no oxygen
volcanic activity released gases like ammonia methane and water vapour
why did oxygen increase
green plants and algae started to photosynthesise
what is a carbon footprint
a measure of the amount of carbon dioxide and other greenhouse gases released over a full life cycle
how can you reduce carbon footprints
using renewable energy instead of fossil fuels
government tax for greenhouse gases released
why do people not want to reduce the greenhouse gas emmisions
governments worried it could affect economic growth
what can particles in air do
stuck in lungs and cause respiratory issues
global dimming- clouds produced reflect light back to space
how is carbon monoxide dangerous
stops blood carying oxygen around the body
by binding to the haemoglobin
what is the greenhouse effect
greenhouse gases dont absorb short wavelength radiation but they absorb long wavelength radiation
they re - radiate it back towards earth
long wavelength radiation is thermal which results in warming of earth
what does incomplete combustion release
carbon
carbon monoxide
co2
what do particulates cause
global dimming
respiratory issues
how are nitrogen oxides created
reaction between nitrogen and oxygen in the air
