• 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. The Impact of Man on the Environment.

    These bacteria are facultative anaerobes and are common in compost heaps, waterlogged soils and in sewage treatment plants. Like this, the nitrogen is released in the atmosphere and it can circulate again. The Environmental Issues Despite the worldwide growth in the environmental movement and environmental awareness, the degradation of our planet and natural resources of our island has accelerated.

  1. Infectious Diseases in Humans

    Through directly reducing the interaction of the two hosts of malaria, the human and the mosquito, the lifecycle of the malaria parasite can be interrupted and its incidence and subsequent prevalence decreased. This fundamental principle is still at the heart of one of the main interventions against malaria today, through

  2. Built Environment

    The western end of the central area was redeveloped into a new central business district. Also the riverbank has been transformed from an industrial dereliction into an entertainment and residential centerpiece. The banks of the Clyde have become a recreational area for property developers, with office blocks and high rise

  1. Hinduism and the environment

    for areas that suffer from drought, using natural and renewable energy sources such as hydro-electric power. So the key beliefs for Hindus towards the environment are: Every living thing on this world contains atman. This includes grass and trees and people.

  2. Emerging Chemical Contaminants: The Case of Perfluorochemicals

    For example, mink from the midwestern U.S. contained significant concentrations of PFOS in their livers (970-3680 ng/g, wet wt). Mink are opportunistic predators but do eat fish as part of their diet. When mink were fed carp from Saginaw Bay, Michigan, containing an average concentration of 120 ng PFOS/g (wet

  1. Acid rain

    2.2 Soil/water interactions Acidification process takes place naturally in the soil. The plant releases hydrogen ions as it uptake nutrients. Though the growth itself is acidifying, there is no net acidification where growth and decay are about equal. However, the cycle is broken by harvesting, the acidifying process will take over.

  2. Enviromental Health - how humans can damage the environment

    * Geothermal Geothermal power plants have relatively little environmental impact?they burn no fuel to create electricity. These plants do create small amounts of carbon dioxide and sulfur compounds, but geothermal emissions are far smaller than those created by fossil fuel power plants.

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