Environmental Problems

Global Warming Acid Rain Erosion Desertification

GLOBAL WARMING

What is the greenhouse effect?

Natural phenomenon that controls the balance of heat within the earth's atmosphere

The process whereby the natural layer of gases in our atmosphere trap a small percentage of the sun's radiation reflected from the earth's surface

What is global warming?

The worldwide warming of the atmosphere

GLOBAL WARMING

What causes global warming? Increases in the amount of carbon dioxide and other gases

What problems are caused by global warming?

Sea levels will rise Flooding

Acid Rain

What caused acid rain?

Burning of fossil fuels

What problems are caused by acid rain?

Kills aquatic life

Kills vegetation

Can erode buildings and monuments

Soil erosion

What caused soil erosion?

Wind

Water

Preventing soil erosion

Avoiding overgrazing and the over-use of crop lands

Encouraging biological diversity by planting several different types of plants together

Conservation of wetlands

Soil erosion

The importance of plants

Plants slow down water as it flows over the land and this allows much of the rain to soak into the ground

Plants break the impact of a raindrop before

Slow down the flow of the water and their roots bind the soil

Desertification

What is desertification?

Desertification is the degradation of land in arid, semi-arid, and dry sub-humid areas.

What causes desertification?

It is caused primarily by human activities and climatic variations.

How does desertification occur?

It occurs because dryland ecosystems, which cover over one third of the world's land area, are extremely vulnerable to over-exploitation and inappropriate land use.

How many people are affected by desertification?

Over 250 million people are directly affected by desertification.

Sources :www.botany.uwc.ac.zawww.geography.learnontheinternet.co.uk

Prepared by :Görkem KiliçaslanGökhan Gediz