Презентация - Ecological problems of the White Sea

Environmental disaster. Ecological problems of the White Sea.
Obletova Valeria 10B

The White Sea is a semi-isolated inland reservoir, which belongs to the Arctic Ocean basin. Its area is small, divided into two uneven parts - the southern and northern, connected by a strait. Despite the fact that the waters of the hydraulic system are very clean, the sea is still subject to anthropogenic influence, which in turn leads to pollution and environmental problems. So at the bottom of the reservoir there is a huge amount of coal slag that destroyed some species of marine flora.

Water pollution by wood
The wood industry has had a negative impact on the ecosystem. Waste wood, sawdust were dumped and washed into the sea. They decompose very slowly and pollute the reservoir. The bark rots and sinks to the bottom. In some places, the seabed is covered with wastes at the level of two meters. This prevents fish from creating spawning grounds and laying eggs. In addition, the tree absorbs oxygen, which is so necessary for all marine inhabitants. Phenols and methyl alcohol are released into the water.

Chemical pollution
The mining industry causes great damage to the White Sea ecosystem. Water is polluted with copper and nickel, lead and chromium, zinc and other compounds. These elements poison organisms and kill marine animals, as well as algae, which kill whole food chains. Acid rain has a negative impact on the hydraulic system.

Oil pollution
Many seas of the planet suffer from water pollution with oil products, including the White Sea. Since oil is produced on the sea shelf, it is not without leaks. It covers the water surface with an oil film that does not allow oxygen to pass through. As a result, plants and animals under it, suffocate and die. In order to avoid negative consequences, in the event of an emergency situation, leaks, spills, oil should be immediately eliminated.

Slow flow of oil into the water is a kind of time bomb. This type of pollution causes severe diseases of flora and fauna. The structure and composition of water also changes, dead zones are formed. To preserve the ecosystem of the sea, you need to reduce the impact of people on the reservoir, and the wastewater must be regularly cleaned. Only coordinated and thoughtful actions of people will reduce the risk of a negative impact on nature, and will help to keep the White Sea in its normal life mode.

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