• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The Effect of Humans on the Environment

Extracts from this document...

Introduction

The Effect of Humans on the Environment Human activity has a huge impact on the environment, and because of the increase in global population in the past century there has been an increase in the effect on the environment. Such things include more land being used for agriculture, transport, housing and other developments. With a growing population there is an even bigger impact on our environment, which comes from economic factors and industrial requirements. Between 1945 and 1975, there was the 'Green Revolution', and this brought a doubling of world food production. The agricultural chemicals, such as fertilisers and pesticides, had a lot to do with this success. The fertilisers made it possible to grow crops where the soil was previously too poor. Their use dramatically increases crop yields, but artificial fertilisers can cause pollution if they drain into rivers and streams. Also there are the pesticides, and these have been used to kill unwanted insects that eat crops, weeds that compete with crops, and fungi that cause disease. ...read more.

Middle

They are also adding to the 'greenhouse effect', and cause the ozone layer to become thin. This layer of ozone in the upper atmosphere protects the Earth from harmful ultraviolet (UV) rays. Not only does the air get polluted, but also the rivers and seas do as well. Pollutants, like fertilisers, drain from the land into our rivers. Domestic and industrial pollutants are often discharged straight into our rivers. The biggest single pollutant that we have is sewage, and it can encourage the growth of algae and bacteria, which use up lots of oxygen. This leads to the result of many fish and small invertebrates to die. Our rivers empty out toxic wastes into the sea and this is not a good thing as it causes further pollution, like: 1. The fertilisers and sewage encourage the growth of toxic algae 2. Pesticides are becoming concentrated in the tissues of shellfish 3. Radioactive chemicals are found in high concentrations around coastal nuclear power stations 4. ...read more.

Conclusion

Scientists have already developed a type of plastic called Biopol. Microbes in the soil can break this down. ICI (Zeneca) is Britain's largest chemical company and scientists there, put bacteria into fermenters with glucose and other nutrients. The microbes make a chemical that can be turned into Biopol. As plastic is used in packaging and is a major pollutant this is a good idea to get rid of it, although when decomposing Biopol produces carbon dioxide. Also to help to try and stop pollution: 1. People should use public transport more so that fewer vehicles are on the road, and so less pollution is being caused. 2. Aerosol cans should not be used as much, so our ozone layer does not become harmed 3. Our rivers should not be filled with fertilisers or toxic wastes from humans 4. We should burn less of our fossil fuels as when doing this it gives off carbon dioxide, which builds up and adds to the greenhouse effect. Also we should burn less of our fossil fuels as they are very important to us and will soon run out. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Environmental Management section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Environmental Management essays

  1. Marked by a teacher

    How do humans affect the environment?

    3 star(s)

    This type of water pollution, involving the accidental fertilisation of lakes and rivers is known as eutrophication. There are certain harmful pesticides, which are also washed into the river. These are sometimes referred to as the 'drins', dieldrin, endrin, and aldrin.

  2. How humans have polluted the Earth

    Without buildings, the whole of our society would crumble. This may be so, but they take up huge amounts of room that would normally be used by animals and plants. Most houses are highly inefficient with space. People strive to have the largest houses possible, using up the most amount of land feasible.

  1. Sociocultural Factors Affecting BP Petrol Filling Stations in the UK

    This partnership is directly benefiting both partners enabling the Trust to plant and conserve woodland and allowing BP to demonstrate its commitment to the environment. On a more global scale this press release by the green party in New Zealand shows us that there is a growth in the amount of ecological petrol stations.

  2. The Impact of Man on the Environment.

    Free living bacteria such asAzotobacter fix nitrogen to ammonium NH4, which they use to make their own independent supply of amino acids. Symbiotic bacteria such as Rhizobium which live in the nodules of leguminous roots also fix nitrogen. With the help of the enzyme nitrogenase, they convert nitrogen gas to NH4+ ions.

  1. Built Environment

    One of the most visited cities in Europe; Glasgow has one of the UK's largest shopping districts. Glasgow is now Scotland's largest city. It has also won awards in the past such as "Europe's City of Culture" and the "UK City of Architecture and Design.

  2. Acid rain

    of acid deposition due to the emission in the Rocky Mountain region (Turk et al, 1989). Figure 3. Acidified lake: A deep blue colour of a lake is a sign of acidification. Source: ARIC (2000) In severely acidified lake, the fish will have vanished entirely, bog moss will have spread

  1. The Damage caused to the Environment by Humans.

    It would speed the melting of polar ice caps, raise sea levels, change the climate regionally and globally, alter natural vegetation, and affect crop production. These changes would, in turn, have an impact on human life. Since 1850 there has been a rise in global temperature of about 1� C.

  2. Enviromental Health - how humans can damage the environment

    * Coal Coal mining has the potential to harm air, water and land quality if it is not done with proper care. Acidic water may drain from abandoned mines underground, and the burning of coal causes the emission of harmful materials including carbon dioxide, sulphur dioxide and mercury.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work