The United Nations describes climate change as a long-term shift in temperatures and weather patterns. These shifts may be normal, but since the start of nineteenth century, human actions have been the main driver of climate change, largely due to the use of fossil fuels (like coal, oil and gas), which generates unhealthy gases.
What are the causes of climate change?
1. Deforestation.Deforestation, in simple terms, is the cutting down or felling of trees. Trees are very important to human life, and they have a way if prolonging human life. How? Trees absorb carbon dioxide (which are unwanted for us) and then releasing oxygen which is so much needed for human existence. But when trees that are supposed to help humans are being cut down in large numbers and replaced by massive buildings, problems arise. The carbon which is present in the trees being cut down is released into the air as carbon dioxide (CO2), and so reduces the amount of oxygen present in the atmosphere. As a result of deforestation, statistics has it that the level of carbon dioxide in the atmosphere has jumped by 50%.
2. Burning of fossil fuels.Examples of fossil fuels are coal, natural gas and oil. When these things are burned they release a large amount of heat to the atmosphere, thus contributing immensely to global warming. Quite unfortunately, the bulk of electrical energy being produced draws much from the burning of these fossil fuels, and this is a big challenge. Research has shown that more than 75% of the energy generated is from this non-renewable energy source, meaning that it is only about 25% that comes from wind, sun and other renewables. Too bad. Indeed, the world needs urgent assignment help to tackle this ugly monster. Thousands of industries around the world release their gaseous waste directly into the atmosphere; they have no provision whatsoever for how the effects of these gaseous waste can be mitigated. These gaseous waste contributes immensely to the problem of global warming.
3. Use of fertilisers which contains nitrogen.These fertilisers produce emissions which increases the warming effect of the atmosphere.
4. Increased rate of livestock farming.Because there is an increased demand for meat, animal rearing has also increased considerably. These animals being reared give up large amount of gases that add up to the greenhouse effect on the globe.
5. Overgrazing.This point has a link to the fifth point above. When the number of cattle being reared is high, consumption of the grasses will be high as well. This is deforestation, in a way. Oxygen levels is therefore reduced, and the level of carbon dioxide emissions increases.
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