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

Human Impact on the Environment - Problems caused by population growth.

Extracts from this document...


Human Impact on the Environment Problems caused by population growth In about 1830 the human population reached one billion, there are now somewhere around six billion people on the planet today and that figure is growing at a very high and very rapid rate. Past populations were controlled by disease, war and famine but now because of technology and modern medicine. The environment around us has been built to support these growing numbers but this development is having a huge effect on the world's ecosystems. Human population's clear other space and habitats of other species to make way for their own. This ignorance has killed many species to extinction and polluted the environment; this has endangered our survival and the survival of other species at risk. However, in natural ecosystems factors are limiting whereas human ecosystems are different as we have the technology to maximise resources and find new ones when existing ones run out. The planet obviously can only hold a certain number of people, most species never reach their maximum numbers but they have a peak, then the numbers start to decline. ...read more.


These organisms also take the dissolved oxygen in the water so that fish and other aquatic animals die out. Eutrophication is when the nitrate and phosphate levels are high this encourages the growth of algae. These algae can cause a lot of damage to the water ecosystem. * Algae grow rapidly and give an 'algal bloom' over the surface of the water. * Many blue-green algae produce toxins which kill some plants and animals. * Small animals that feed on algae do not multiply fast enough to check the increase in the algae. * Algae block out the light for the rooted plants growing on beds of lakes and they die. This reduces the amount of oxygen. * The algal population crashed due to competition for resources. The algae are then decomposed by bacteria which use the oxygen in the water. * This lack of oxygen kills many invertebrates and fish. All this is the process of eutrophication. The pollution of the atmosphere Pollution is a term used to describe the presence of an unwanted substance. ...read more.


Scientists who work on these models are quick to point out that they are far from perfect representations of reality, and are probably not advanced enough for direct use in policy implementation. Interestingly, as the computer climate models have become more sophisticated in recent years, the predicted increase in temperature has been lowered. However, 98% of total global greenhouse gas emissions are natural (mostly water vapour) and only 2% are from man-made sources. Sustained Development Sustainable development is where a population can make developments and improvements to their area or their needs without causing harm to the environment. Sustainable development is all about a greener planet in both developed and developing countries by not polluting the environment and being more energy friendly. Sustainable development is * Social progress which recognises the needs of everyone * Effective protection of the environment * Prudent use of natural resources Sustained development can be achieved by using less fossil fuels and researching into environmentally friendly sources of energy like solar and geothermic sources. Be less wasteful so that we use fewer resources so that they are prolonged and regenerate, find more effective ways of disposing of waste and producing less waste in the first place. ...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

    The impact of human activities on the environment

    3 star(s)

    Pests are organisms that damage or destroy crops and livestock. There are different types of chemical pesticides for killing different types of pest. Insecticides kill insect pests, herbicides kill weeds and fungicides kill disease- causing fungi. Biodegradable pesticides are broken down by the activities of organisms and only remain in the environment for short time after they are applied.

  2. Deforestation and its impact on the environment

    ensure that the farmers already in the Amazon remain on the deforested land. This would in turn reduce migration and further deforestation inland. The poor farmers in the Amazon depend on the resources from the forest for their very survival.

  1. I am going to research waste pollution. I have chosen to research waste pollution ...

    The paper is also collected at a kerbside in a box left by residents. Greenwich also has a network of 80 bring sites located across the borough, and also offers a recycling centre for residents. Refuse in the borough of Greenwich is collected from 92,000 households on a weekly basis.

  2. Formation and effects of acid rain.

    nearly all the continents of the world are producing immense amounts of Sulphur dioxide and Nitrogen oxide. Task 5: SOLUTIONS TO THE ACID RAIN PROBLEM a. Measures can be taken to solve or reduce the acid rain problem. For lakes that have been acidified, the PH level can be increased by using a system called liming.

  1. The Impact of Man on the Environment.

    It is better to understand the Ecological terms first in Ecology. There are three main parts which are studied further about the Impact of human activities on our environment. These are Economy, Society & Ecology. Ecology Ecology is the scientific study of the relations that living organisms have with respect

  2. Free essay

    Health & The Environment

    Contamination of the atmosphere by man made and natural pollutants has led many to suggest that the rise in asthma positively correlates with the release of pollutants into the atmosphere. Allergenic factors relates to the different triggers that affect asthma sufferers, these vary depending on the time of year, weather and other allergies.

  1. Enviromental Health - how humans can damage the environment

    Chemical compounds and other water pollutants cause aquatic animals difficulties with breathing while on the other hand these chemicals can also be quite toxic for land animals once they drink this polluted water. The environmental damage of water pollution doesn't stop there; water pollution also increases the impact of air

  2. I am researching about four organisations energy policies which are: McDonalds, Tescos, EDF Energy ...

    like Australia and many people did protests for stop using eggs from caged hens. As McDonald?s is a fast food restaurant, they sell a lot of junk food and it?s not a healthy restaurant as many young people are getting affected by obesity.

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