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Aims of the session: Learn about fertilisers and their effects on the environment. Be able to answer exam questions on PowerPoint Presentation
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Aims of the session: Learn about fertilisers and their effects on the environment. Be able to answer exam questions on the effects. Learn about Pesticides and their effects Summarise the key points about pesticides. Fertilisers and Pesticides. Fertilisers. The process of Eutrophication.

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slide1

Aims of the session:

  • Learn about fertilisers and their effects on the environment.
  • Be able to answer exam questions on the effects.
  • Learn about Pesticides and their effects
  • Summarise the key points about pesticides
slide4

The process of

Eutrophication

slide6

Biochemical Oxygen Demand (BOD).

This measures the rate of oxygen consumption by a sample of water, and therefore gives a good indication of eutrophication. A high BOD means lots of organic material and aerobic microbes, i.e. eutrophication

slide11

The nitrate concentration falls during spring and summer and rises during autumn and winter

Less algal growth as autumn begins

Possibly all plants have died

slide14

Pesticides

  • Include:
  • Herbicides
  • Insecticides
  • Fungicides
  • Bactericides
slide17

Pesticides

Persistence

+ Lipid solubility

= Bioacculmulation

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This powerpoint was kindly donated to www.worldofteaching.com

http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.