Question

Mark in the following text the sentences that express the possibility of something happening. What is global warming? Our planet is warming. The last 10 years have been the hottest since records are kept and scientists say they could be hotter in the future. Most experts agree that humans have a direct impact on this heating process, generally known as the "greenhouse effect." The “greenhouse effect” is a natural condition of the earth's atmosphere. Some gases, such as water vapors, carbon dioxide (CO2) and methane are called greenhouse gases, because they trap heat from the sun in the lower layers of the atmosphere. Without them, our planet would freeze and nothing could live on it. The "greenhouse effect" is the warming that occurs when certain gases in the Earth's atmosphere retain heat. These gases let light in, but keep heat in like the glass walls of a greenhouse. The "greenhouse effect" is the warming that occurs when certain gases in the Earth's atmosphere retain heat. These gases let light in, but keep heat in like the glass walls of a greenhouse. Sunlight shines on Earth's surface, where it is absorbed and then returns to the atmosphere as heat. In the atmosphere, greenhouse gases retain some of this heat and the rest escapes into space. The more greenhouse gases, the more heat is retained. To these gases humans add pollutants that result in an accumulation of gases in the atmosphere. The most important of the gases produced by human activity is CO2, which is released when burning materials that contain carbon, such as coal, oil or firewood. These gases remain in the atmosphere for more than 100 years. In the last 200 years, C02 concentrations in the atmosphere have increased by one third. People living in developed countries contribute a greater percentage to global warming than people in developing countries. On average, each citizen of North America adds 5 tons of CO2 to the air each year, while a European or a Japanese contributes between 2 and 3 tons, a Chinese 0.6 and a Hindu 0.2. Currently, more than 90 percent of the carbon dioxide present in the atmosphere has been emitted from Europe and North America. If the situation continues as it is, the amounts of CO2 could double over the next 100 years. As a result, the temperature can rise on the planet by an average of 1 degree Celsius.​

Answer 1

Respuesta:

R=What is global warming?Global warming results from the increase in the greenhouse effect, a process in which the thermal radiation emitted by the Earth is trapped in the atmosphere due to gases with that effect (GHG). Its presence is natural and necessary to maintain the temperature of the planet in habitable values.

Explicación:

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