The green house effect is where the sun gives off short wave radiation (insulation) and this is absorbed by the Earth’s surface. The insulation is then re-radiated as long wave radiation. This is absorbed in the atmosphere. This means that Greenhouse gasses also absorb the radiation and in turn, this heats the gasses which subsequently, heats the atmosphere.
Scientific research indicates sea levels worldwide have been rising at a rate of 0.14 inches (3.5 millimeters) per year since the early 1990s. The trend, linked to global warming, puts thousands of coastal cities, like Venice and Italy, and even whole islands at risk of being claimed by the ocean.
The two major causes of global sea-level rise are thermal expansion caused by the warming of the oceans (since water expands as it warms) and the loss of land-based ice (such as glaciers and polar ice caps) due to increased melting.
As you can see the five main gases are carbon dioxide, methane, nitrous oxide, halocarbons and ozone. Electricity production generates the largest share of greenhouse gas emissions. Over 70% of our electricity comes from burning fossil fuels, mostly coal and natural gas. Greenhouse gas emissions from transportation primarily come from burning fossil fuel for our cars, trucks, ships, trains, and planes. Over 90% of the fuel used for transportation is petroleum based, which includes gasoline and diesel. Greenhouse gas emissions from industry primarily come from burning fossil fuels for energy as well as greenhouse gas emissions from certain chemical reactions necessary to produce goods from raw materials. Greenhouse gas emissions from businesses and homes arise primarily from fossil fuels burned for heat, the use of certain products that contain greenhouse gases, and the handling of waste. Greenhouse gas emissions from agriculture come from livestock such as cows, agricultural soils, and rice production.
Some benefits of global warming are that Canada’s North-West Passage may become ice-free and can be used by shipping, frozen regions of the world such as Siberia and northern Canada may be able to grow crops in a milder climate, energy consumption may go down as temperatures increase in densely populated parts of the world such as north-west Europe and finally there will be longer growing seasons in rich agricultural areas such as Europe and North America will increase food production
