World’s Water in danger 10 класс

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Презентация к учебнику “Starlight” 10 класс Module 4

earth’s cover, it undeniably becomes one of our greatest resources.
We

need water
to support our lives,
to grow our crops,
to water our stock,
to power our industries and for many other purposes.

to the depletion of water resources.

waste, our water bodies have turned into a pool of

poison.

enough supply of drinking water. A large part of the

world’s population lives without the access to clean drinking water.

poison

Illness

suffer

Death

the nature.
SOS

saving;
Water cleaning;
Saying «no» to wasting;
Global informing about

water problems.

the sea depths flora)

Ksenia Fedorova
Alexander Kosov
(Representative of the WPC organization)
Roman

Khannanov

reduced to below acceptable levels. Overfishing can occur in water

bodies of any sizes, such as ponds, rivers, lakes or oceans, and can result in resource depletion, reduced biological growth rates . Sustained overfishing can lead to critical depensation, where the fish population is no longer able to sustain itself. Some forms of overfishing, for example the overfishing of sharks, has led to the upset of entire marine ecosystems.

Global harvest of aquatic organisms in million tonnes, 1950–2010, as reported by the FAO.

Atlantic cod stocks were severely overfished in the 1970s and 1980s, leading to their abrupt collapse in 1992

More than 40 percent of all organisms are likely to

become extinct soon, which is unbelievable. Some of them are simply few in numbers, some are threatened by changing environment. In most cases animal extinction, as well as other natural calamities, is a result of human actions. Many habitats are being destroyed around the world. It seems that endangered wildlife is everywhere around us. Human activity has strong influence on the process of animal extinction.

release chemical wastes into ocean water. As a result, thousands

of sea animal die out. Moreover, people often overexploit animals, buying and selling their valuable parts, such as skin, teeth, fat, tusks. If people continue treating our environment in such way, we will soon be trapped in ecological disaster. There are many reasons for rare species’ conservation. Firstly, they have aesthetic value. Secondly, they are useful from medical point of view. And, finally, the ecology of our planet literally depends on them.

of their health. Each of us have to do everything:

to keep water clean, to safe endangered sea animals. Also it is necessary not only to clean water, but not to pollute. And we always have to remember, that the future of our oceans, seas and our planet is in our hands!