Pollution 2

Question 1

name the many sources which contribute to air pollution

Answer 1

1) Agriculture - farming practices such as rice paddies release methane
2) Cooling systems - CFC’s are gases released from aerosol cans, refigerators and air conditioners which contribute to the hole in the ozone layer
3) Power stations & cars - car exhausts produce carbon monoxide which binds to haemoglobin. power stations produce sulphuric acid which causes acid rain
4) Burning fossil fuels - this releases greenhouse gases such as methane and CO2 which causes global warming

Question 2

what is the definition of deforestation

Answer 2

deforestation is the cutting, clearing and removal of forest in order to make more land for farming and housing

Question 3

what does deforestation effect and how

Answer 3

1) Biodiversity - destroys habitats
2) Water cycle - reduces evapotranspiration
3) Atmospheric gases - the burning of trees increases the rate of C02 which is released into the atmosphere
4) Soil erosion - soil covering the bare earth, which is normally covered by trees is more easily washed away by rain making the soil less fertile