Rainforest%20Destruction:%20Causes%20and%20Effects - PowerPoint PPT Presentation

About This Presentation
Title:

Rainforest%20Destruction:%20Causes%20and%20Effects

Description:

When the trees in the rainforest are cut down, carbon dioxide ... co.uk/topics/rainforest.html#where. http://www.davesite.com/rainforests/review2.shtml ... – PowerPoint PPT presentation

Number of Views:4080
Avg rating:3.0/5.0
Slides: 14
Provided by: admc1
Category:

less

Transcript and Presenter's Notes

Title: Rainforest%20Destruction:%20Causes%20and%20Effects


1
Rainforest DestructionCauses and Effects
  • Enda Tuomey

2
Introduction
  • The tropical rainforests of West Africa, Brazil,
    Latin America and Southeast Asia are some of the
    most important environmental regions of the
    world. They hold millions of unique plants,
    animals, and people. However, they are being
    destroyed rapidly for agriculture, mining and
    logging. This essay will examine the causes of
    this destruction and outline its effects on our
    lives.

3
Causes
  • A complex web of factors is contributing to the
    destruction of the rainforests.

4
Causes 1
  • One of the main causes of is logging for timber.
    Millions of hectares are cut down every year,
    often illegally. The most valuable wood is taken
    and not replaced. Landless people move in along
    the new logging roads.

5
Causes 2
  • Mining companies are responsible for much
    deforestation. They cut down trees to extract
    gold and other minerals. Their activity often
    causes pollution.

6
Causes 3
  • However, one of the biggest contributors to
    rainforest destruction is that they are often
    located in developing countries. As a result, the
    forests lack protection and are in danger from
    wealthy developers, companies and from poor
    landless people.

7
Effects
  • Rainforest destruction has many catastrophic
    effects.

8
Effects 1
  • A tragic effect of the loss of the rainforest is
    the extinction of plants and animals that could
    provide us with food, medicine or valuable
    products. Thousands of species disappear each
    year. This leads to a poorer world with less
    biodiversity.

9
Effects 2
  • One surprising result of the destruction of the
    rainforest is that soils and nutrients are washed
    away. When the trees are cut down, the soil is
    exposed to the heavy rain and quickly becomes
    infertile and useless. The forest cannot grow
    again, and the people who used the land have to
    move on.

10
Effects 3
  • One of the most serious effects is global
    warming. When the trees in the rainforest are cut
    down, carbon dioxide is released into the
    atmosphere. This carbon dioxide acts as a
    blanket, trapping the suns heat and warming the
    planet. This can have huge consequences for the
    worlds climate.

11
Conclusion
  • In summary, the rainforests are important for the
    environment because they produce oxygen, store
    carbon and have huge stores of timber, minerals,
    medicinal plants and food. They are potentially a
    huge source of genetic material. Human activities
    are damaging this treasure. If we do not take
    action now, this vital part of our heritage will
    be lost forever.

12
Sources
  • http//www.geography.learnontheinternet.co.uk/topi
    cs/rainforest.htmlwhere
  • http//www.davesite.com/rainforests/review2.shtml
  • http//www.savetherainforest.org/savetherainforest
    _006.htm
  • http//www.msu.edu/user/urquhar5/tour/slide0.html
  • http//mbgnet.mobot.org/sets/rforest/where.htm

13
Rainforest DestructionCauses and Effects
  • Enda Tuomey
Write a Comment
User Comments (0)
About PowerShow.com