Предмет: Математика, автор: nurguly

составь по краткой записи задачу и реши ее.
было-18кг
продали-?
осталось-8кг

Ответы

Автор ответа: Lina0105
0
18-8=18кг
Ответ:18кг
все очень просто:) решается одним действием
Автор ответа: Lina0105
0
условие:было 18кг я блок ,продали 8кг . сколько осталось?
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The problem of ecology is very important today, because we live in a polluted world. People all over the world discuss environmental protection, but they still continue to pollute air, water and soil.
Plants and factories are being built near rivers and lakes. The water is full of industrial waste and this kills animals, insects and plants.
There are some organizations that were created to protect our nature from pollution. The most famous organization is Greenpeace. It protects animals from dying out. There are special farms and organizations that help wild animals to survive. People who work in such places feed animals and cure them.
There are several types of pollution: air pollution, water pollution and soil pollution.
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Water pollution is another dangerous kind of pollution. Factories and plants throw wastes into rivers and lakes making them dirty. Animals die when they drink this water, people get sick when they swim in it and eat fish that live there.
Soil pollution stops plants from growing and makes people sick when they eat fruit and vegetables grown on polluted soil. People also pollute soil by leaving litter on it. Forests are full of used bottles, wrappers and cans. Such litter can be found in rivers and lakes, too. Wild animals get sick and die because of this.
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It is not possible to stop technological process, close factories and plants. People need to invent new waste free technologies that will not do harm to nature. There are new inventions such as filters that make water and air clean. Some factories and plants have started using these machines already and this helps to prevent pollution. Special kinds of gasoline for cars can help to reduce air pollution.
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