Question

What is global warming ? What are its causes ? State its effects.

Answer 1

a) Global warming, the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries.

b) Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface. Normally, this radiation would escape into space—but these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. That's what's known as the greenhouse effect.

In the United States, the burning of fossil fuels to make electricity is the largest source of heat-trapping pollution, producing about two billion tons of CO2 every year. Coal-burning power plants are by far the biggest polluters. The country’s second-largest source of carbon pollution is the transportation sector, which generates about 1.7 billion tons of CO2 emissions a year.

c) Each year, scientists learn more about the consequences of global warming, and many agree that environmental, economic, and health consequences are likely to occur if current trends continue. Here’s just a smattering of what we can look forward to:

Melting glaciers, early snowmelt, and severe droughts will cause more dramatic water shortages and increase the risk of wildfires in the American West.

Rising sea levels will lead to coastal flooding on the Eastern Seaboard, especially in Florida, and in other areas such as the Gulf of Mexico.

Forests, farms, and cities will face troublesome new pests, heat waves, heavy downpours, and increased flooding. All those factors will damage or destroy agriculture and fisheries.

Disruption of habitats such as coral reefs and Alpine meadows could drive many plant and animal species to extinction.

Allergies, asthma, and infectious disease outbreaks will become more common due to increased growth of pollen-producing ragweed, higher levels of air pollution, and the spread of conditions favorable to pathogens and mosquitoes.

Answer 2

Answer:

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❁ DUE TO HUMAN ACTIVITES AN EXCESSIVE AMOUNTS OF CARBON DIOXIDE AND OTHER GREEN HOUSE GASES HAS BEEN EMITTED TO THE ENVIRONMENT.

❁ AS A RESULT MORE HEAT GETS TRAPPED.

❁ THIS CAUSES THE TEMPERATURE OF THE EARTH TO RISE, WHICH RESULTS IN GLOBAL WARMING.

❁ GLOBAL WARMING IS THE RECORDED INCREASE IN THE AVERAGE TEMPERATURES OF THE EARTHS ATMOSPHERE AND OCEANS.

❁ GLOBAL WARMING AFFECTS THE WEATHER PATTERNS ON EARTH AND CAUSE CLIMATE CHANGES.

❁ CLIMATE CHANGE RESULTS IN HIGHER SEA LEVELS , MORE RAINFALL AND SEVERE DROUGHTS AND FLOODS.

• HOPE IT HELPS YOU✾✾