1.

Války

2.	Životní prostředí

2.1	Znečištění

2.2

Smog

2.3	Skleníkový efekt

2.4	Ozónová díra

2.5	Znečištění vody

2.6

Odpad

2.7	Řešení problémů a přístup k ochraně životního prostředí

3.

Hladomor

4.	Přelidnění

5.	Globalizace

6.	Červený kříž

“ Water is polluted,too. Waste-water is drained into rivers. It kills fish and other water animals and plants. It is polluted by households, industrial processes, chemicals used in agriculture,by waste and ships(mainly by tankers which crashed and oil run out). Factories pollute rivers because they discharge their chemical waste to water. Also farmers pollute the soil because of an enormous using of pesticides and fertilizers. This pollution can also affect groundwater. Water pollution comes from waste disposal sites, too. There can be high concentration of heavy metals- such as mercury, lead and other substances such as nitrate. They can get into inland waters by leaching from waste disposal sites.
Seas and oceans are very important for human life.There live many kinds of animals for example whales dolphins, sharks, fish etc…Fish are very important because they are important part of human food. The most fish consuments are China, Russia and Japan. Oceans are often polluted by oil spills. At the bottom of the seas there is crude oil and gas. Mining can cause ecological catastrophes because the oil can get out form the tankers.
Oil tankers endanger our environment. Wrecked ships make a mess. Nowadays the petrochemical industry ranks among the most important industries. We produce various plastics, petrol by using crude oil as a raw material. Crude oil is to be found especially in the Middle East and Alaska. It is usually transported by sea in oil tankers or overland by pipelines. Then it is refined and used for producing other products. Sometimes there are great disasters because tankers sink. The toxic cargo spills out onto the sea´s surface. It is drifted with the tide onto beaches. Oil spills kill sea birds, fish, otters, plants and other forms of maritime life. Big areas are contaminated and that´s why we can´t catch fish there. Local fishermen are out of work. There might be a decline in tourism. Cleaning up cost huge sums of money. Sea birds´feather is coated by the oil, their insulation is reduced and they might freeze to death or get drowned. That´s why new regulations for transporting oil were taken. Oil tankers must have a double- skinned hull. The outer might be destroyed, so there´s the inner part which keeps the oil inside.
It is neccessary to increase the number of sewage treatment plants. We should find technologies for saving water and reduce the amount of chemicals. We should never dump motor oil, pesticides and other toxic chemicals into a sewer or into rivers, ponds. We shouldn´t throw any trash there,
In our country we can notice floods, which appear nearly every year. Floods are generally caused by long heavy rains or when a lot of snow melt in the spring and water run down from mountains. Water floods towns, roads and their surrounding and damages houses, bridges,roads and kill people and animals who don´t run away.
Fires are caused by someones´s inattention or by dry, hot season. Wind helps to expand the fire. But fire brigade try to stop this catastrophe. I think this profession is one of the most dangerous at all..."