Ingliz Tilidan Onlayn Attestatsiya Testlari 11

Recent research has revealed that passive smoking, even over a short period of time, such as thirty minutes, can temporarily damage a non-smoker’s heart. Experts have been warning for some time of the health risks caused by inhaling the smoke from other people’s cigarettes, but the average person does not yet seem to be very aware of these. People in most countries are now quite well informed about the dangers of smoking, whether or not they choose to act on the information and stop smoking. They know, for example, that smoking can lead to respiratory diseases, including serious diseases, such as lung cancer. However, their knowledge of the consequences of passive smoking seems very limited. According to this part of the text, passive smoking …

Experts in climatology and other scientists are becoming extremely concerned about the changes to our climate which are taking place. Admittedly, there have been sereval ice ages or glacial periods. These climatic changes, however, were different from the modern ones in that they occurred gradually and, as dark as we know, naturally. The changes currently being monitored are said to be the result not of natural causes, but of human activity. Furthermore, the rate of change is becoming alarmingly rapid. The major problem is that the planet appears to be warming up. According to some experts, this warming process, known as global warming, is occurring at a rate unprecedented in the last 10,000 years. The implications for the planet are very serious. Rising global temperatures could give rise to such ecological disasters as extremely high increase in the incidence of flooding and of droughts. These in turn could have a harmful effect on agriculture. According to this part of the text, some experts claim that this warming process, known as…