Ответьте на вопросы: 1)what is the greenhouse effect? why is it dangerous, 2)what climate do people have in vladivostok? 3)why are rainforests so important to the life on the earth? 4)what are the most important enviromental problems? how can the problem of water pollution be solved? 5)what can cause ai

1) every schoolchild knows that global warming poses a great danger. yes, it's bad, yes, the earth is screaming for help, but what happens in 100 years if we don't stop the greenhouse effect? greenhouse effect ecologists call a significant increase in the temperature of the planet's atmosphere, in particular, its lower layers. for the first time the idea of the greenhouse effect was expressed by joseph fourier in his work "notes on the temperatures of the earth and other planets." unfortunately, the increase in temperature can not be stopped – you can only slow the process of warming. the concentration of greenhouse gases in the earth's atmosphere has increased to us, but progress has accelerated. 2) vladivostok has a monsoon climate. average temperature in august: 19,8 °c. absolute maximum temperature: +33,6 ° c (recorded in july 1958). average january temperature: -12,3 °c. absolute minimum temperature: -31,4 °c (registered 10 january 1931). record maximum precipitation per day: 243.5 mm (13 july 1990, typhoon "robin"). average annual pressure is 763 mm hg. 3)in 1800 the rain forest occupied an area of 2.9 billion ha. today, after only 200 years, they remain less than half – 1.4 million ha. every day in the world destroyed 40500 hectares of tropical rainforest trees are cut down for their valuable wood and to clear space for agriculture. the dense vegetation of these forests occupies only 2% of the world's surface, but it plays a huge role in preserving the health of our planet. the destruction of rainforests reduces the amount of oxygen and carbon dioxide in our air. and because of too much carbon dioxide in the earth's atmosphere, it is difficult to reflect solar heat back into space, resulting in an increase in the temperature of the globe (this is called the greenhouse effect). global warming, in turn, can cause significant climate change. for example, melting glaciers and rising sea levels could flood coastal areas around the globe. plants of tropical rainforests produce natural chemicals that protect them from insect destruction, and modern scientists know how to get insecticides from these plants for processing fields (without destroying the forests themselves). such insecticides are much less toxic than synthetic (i.e. artificially produced) chemicals. many drugs – the fourth part of all the drugs prescribed to us-are made from materials collected in humid tropical forests. and a lot of other drugs that are likely to save lives are waiting to be discovered in these forests. in the rainforest you can get a lot of useful substances, such as natural rubber, essential oils (which are used in perfumes and cosmetics), rattan (the material from which the furniture is made), and it does not need to destroy forests everywhere. among other things, such forests absorb huge amounts of water, and if you destroy them, then a huge amount of water in these areas of the globe will absorb no one; and it threatens frequent numerous floods and floods. fortunately, international organizations have now begun to take action to save the remaining rainforests by helping those who destroy them find other ways to make a living. and yet, despite this, such important for the planet rainforests continue to disappear at an alarming rate. 4)water is the most valuable natural resource. her role — participation in the process of exchange of all substances, which are the basis of all life forms. it is impossible to imagine the activities of industrial, agricultural enterprises without the use of water, it is indispensable in everyday life. water is necessary for everyone: people, animals, plants. for someone it is a habitat. the rapid development of human activities, the use of inconclusive resources has led to the fact that environmental problems (water pollution as well), have become too acute. their decision is in the first place of mankind. scientists, environmentalists around the world are sounding the alarm and trying to find a solution to the global problem of freshwater scarcity.  sources of water pollution causes a lot of pollution, and not always the fault of the human factor. natural disasters also harm clean water, disturb the ecological balance. the most common sources of water pollution are: industrial, domestic waste water. do not complete the treatment system from chemical harmful substances, they are entering the reservoir, and provoke an ecological disaster. acid rain. this is a common phenomenon, although it is rarely talked about. all industrial exhaust gases, car exhaust, once in the atmosphere, return with the rain back to the ground, water bodies. solid waste, garbage. not just pollute rivers, but even change the course of the flow, making it difficult. possible spills of lakes and rivers. organic pollution. their natural decomposition (death of plants, animals). technogenic accident. industrial accident. thermal, radiation pollution. sit down, avalanche. 5) можно вопрос сформулировать правильнее?

через формулу  (x  -  r)^2  + (y  -  r)^2  =  r^2

короче: (-9-8)^2+(-9-2)^2= (-17)^2+(-11)^2=289+121=410