Air and water pollution

• Air pollution


  Air pollution is the contamination of the environment by harmful substances that are produced by the activities of humans
• greenhouse gases

  • carbon dioxide
  • water vapour
  • methane
  • nitrous oxide
  • CFCs
• Carbon monoxide

  When substances containing carbon are burned in a limited supply of oxygen, carbon monoxide is formed. This happens when petrol and diesel are burned in vehicle gases. It’s dangerous because it is colourless, odourless and tasteless (is fatal). haemoglobin binds more strongly with carbon monoxide than with oxygen. Result of lack of oxygen
• Consequences of global warming

  • polar ice caps melting (water levels rise)
  • a change in major ocean currents would result in warm water flowing into cooler areas
  • increase of evaporation which leads to more vapour and rainfall
  • changes habitats and their conditions which lead to animals becoming extinct
  • high temps allow pests go complete their life cycles more quickly
• sulphur dioxide 


  Formed when fossil fuels are burned. it is an impurity in carbon. It combines with water droplets in the air and can be carried hundreds of miles in the atmosphere before falling as ACID RAIN. Both sulfur dioxide and nitrogen oxides dissolve in rainwater to form a mixture of acids including sulfuric acid and nitric acid.
• chloroflurocarbons


  Contains carbon chlorine and fluorine. one widely used in fridges cans and solvents. They were damaging the ozone layer in the atmosphere. The ozone layer protects living organisms by absorbing harmful ultraradiation from the sun.
• Methane


  Produced when micro organisms ferment larger organic molecules to release energy.

  • decomposition of waste buried in the ground by micro organisms
  • fermentation by micro organisms in the stomach of cattle
  • fermentation by bacteria in rice fields
• Water pollution


  Harms us and animals and plants that live in or are near the water that we depend on
• Consequences of sewage in waterways

  • Aerobic bacteria uses up oxygen as they break down the organic materials. this reduces the amount of oxygen killing animals and indirect disease from fish
  • Contains pathogenic bacteria - danger to human health
  • blood worms thrives in heavy polluted water
• Sewage treatment 


  Remove solid and suspended organic matter and pathogenic micro organisms so that cleaner waste can be discharged into waterways
• EUTROPHICATION

  • water is polluted by leeching.
  • algae benefits from this so they grow quickly on the surface (they are deep little fellas)
  • light cannot reach the damn animals!!
  • aquatic animals and algae beneath the surface die due to lack of light
  • decomposing fellas (micro organisms) use up the oxygen because they are aerobic bacteria!!!
  • ORGANISMS IN THE WATER DIEEE🥳
• Soil erosion


  those roots arent holding up the soil anymore so it increases erosion snd creates landslides. HOORAY
• Evapotranspiration😏😏

  There arent any leaves so water cannot evaporate. The roots cant absorb the water 🚿
• Carbon cycle 


  Carbon dioxide is let out because the trees arent there to absorb it
• Balance of atmospheric gases

  • carbon dioxide increases because the lack of trees and when those trees are burned more carbon dioxide is produced
  • If you leave trees that have been cut. They decompose and do aerobic respiration which uses up the oxygen and releases carbon dioxide as the waste gas
• Global warming

  • long wave length IR radiation from earth escapes into space
  • when short wave length IR radiation strikes the earth, some energy is absorbed. the radiation is re emitted as longer wave radiation
  • some long wave length IR radiation from earth is absorbed by the greenhouse gases and is remitted back the earth. CHANGE IN WAVE LENGTH