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

Increases in population size leads to an increase in deforestation, pollution and the loss of habitats which all make higher demands on the earth's resources. Wildlife and

Extracts from this document...

Introduction

The human population is increasing rapidly due to improvements in agriculture, living conditions and medicines like antibiotics/immunisations. Increases in population size leads to an increase in deforestation, pollution and the loss of habitats which all make higher demands on the earth's resources. Wildlife and their habitats are harmed because of the greenhouse gases released such as carbon dioxide, methane, cfc's and nitrogen oxide. All these gases contribute to the greenhouse effect, acid rain and pollution in the air, soil and water. As the air is polluted through the burning of fossil fuels they release carbon dioxide, sulphur dioxide and nitrogen oxides which make acid rain. Acid rain harms plants and animals are affected in the rivers and lakes. The rain washes ions, such as magnesium and calcium, out of the soil depleting the minerials available to plants. It also washes aluminium, which is poisonous to fish, out of the soil and into rivers and lakes. This can cause fish to die which would effect the food chain as there would be less fish for other animals to feed on. ...read more.

Middle

Many animals are not able to adapt to these rapid changes and they are dying off at an incredible rate. Approximately one hundred species per day are going extinct due to deforestation. These animals need trees/vegetation to survive. Despite its diminished state, the Atlantic Forest harbors around 2,200 species of birds, mammals, reptiles and amphibians - 5% of the vertebrates on Earth. This includes nearly 200 bird species found nowhere else, and 60% of all of Brazil's threatened animal species call this forest home. Some of the Forest's species include the golden lion tamarin, wooly spider monkey, red-tailed parrot, and maned three-toed sloth. The Forest is also home to around 20,000 species of plants, representing 8% of the Earth's plants. In fact, in the 1990s researchers from the New York Botanical Garden counted 458 tree species in 2.5 acres - more than double the number of tree species in the entire U.S. eastern seaboard. New species of flora and fauna continue to be discovered. The forest structure contains multiple plants that help with cures for diseases. ...read more.

Conclusion

Nitrogen gas cannot be used by plants and is converted to nitrates. Nitrifying bacteria in the roots of plants convert ammonia from the decayed remains and waste of animals and plants into nitrates and converts this into proteins. There is no easy solution as deforestation is caused by many things. One option is decreasing the amount of products that are harvested from the rainforests. This could be done by enforcing programs that used recycling, the need for disposable products wouldn't be there so nobody would need to cut the trees down. The less packaging on products would help. Another way would be to plant more trees but the old forests would still be lost and they're not the same as new ones. The use of unleaded petrol and sharing of cars would reduce the amount of carbon dioxide released back into the atmosphere as well. Forests were put on Earth for a reason, as they help to maintain a balance between all of nature's elements and this is being put at risk. BOOKS: Collins,(2005)GCSEBiology.London:Jackie Clegg and Mike Smith Letts,(2001)GCSEBiology.London:Hannah Kingston Roberts, M.B.V.(1986)Biology for Life.2nd ed. China: Thomas Nelson INTERNET: http://www.botany.uwc.ac.za/Envfacts/facts/deforestation.htm(accessed 1December 2005) http://www.enn.com/(accessed 29 November 2005) http://www.nationalgeographic.com/eye/deforestation/effect.html(accessed 29 November 2005) http://en.wikipedia.org/wiki/Main_Page (accessed 1 and 7 December 2005) ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Living Things in their Environment 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 GCSE Living Things in their Environment essays

  1. cellular respiration

    fluctuates as the mung beans goes throughout the different stages of germination. From these results you can see that the mung beans have a slow respiration rate as they are non-germinated and a faster respiration rate as they are germinating.

  2. 'The Call of the Wild' by Jack London - review

    It shows Bucks ability to learn from what he sees and the mistakes he makes. For example he learns many of his lessons from the other more experienced dogs. He is placed between Dave and Sol-leks so he might 'receive instruction' and that 'he was an apt student and they

  1. alternatives to global warming

    Energy Renewable or Non Renewable Reasons for use Reasons for not using Wind Power Renewable Plentiful, widely distributed, clean Unreliable, expensive set up Solar Power Renewable Cheap, pollution free, easy to use. Unreliable, expensive set up Tidal Power Renewable Plentiful, widely distributed, clean Unreliable, unsightly There is little doubt in

  2. Estimating the population of non-grass plants on the school fields.

    so the quardinates will be easy to set. After this it would be quite easy to get random numbers using my scientific calculator and convert them into quardinates. To get a fair test it is important to have a random sample, so all the plants on the field will have an equal chance of being selected.

  1. An Investigation into the water quality of the River Banwell in

    Ammonia sticks Allows me to see if it is more accurate than the other methods. Lab Coat Protects clothes Prevents chemicals coming into contact with skin. Pen Labelling of samples Labels Allows precise labelling of test samples. Prevents human error Indicator species Chart Allows identification of species in the water

  2. Rain forests.

    Most rain forest nutrients are part of living plants. Small amounts of nutrients occur in a thin layer of topsoil that contains decaying vegetation. Rain forest trees have developed several ways of capturing nutrients. For example, they obtain nourishment from rainwater that collects in their leaves or along their trunks and branches.

  1. The Arthur R. Marshall Nation Wildlife Refuge.

    The more natural and untouched the park, the more advantaged the native species will be, while modifications might be more of an advantage to the exotic species. The refuge's climate consists of moderate temperatures with a mean of 89oF in the summer and 56oF in the winter, while extreme temperatures occur occasionally at 20oF and 110oF.

  2. An Investigation to find the Effect of Distance from the Sea on the Number ...

    which eats it. The energy within the herbivore is passed onto the carnivore (a secondary consumer) which eats the plant eater, and this continues along the chain. The undigested food (egesta) and the excreta of the animal and respiration are all ways that energy is lost and any remaining energy

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