HUMAN ACTIVITIES
Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming. Hence, these are some explanations of human activities.
1. EXCESSIVE USE OF FOSSIL FUEL
Fossil fuels are used for many purposes today.
First of all, fossil fuels are supplied by about 80% of the world's energy today, such as driving cars, turning on lights, and operating factories as a driving force for global economic development. However, according to fossil fuels, human power consumption is still increasing rapidly, and much of the power we use still depends on thermal power plants.
Thermal power plants emit huge amounts of carbon dioxide, and 40% of the U.S. carbon dioxide emissions have been found to be caused by power generation, accounting for 93% of them. The use of electronic products continues to increase even now, and we will not be able to avoid the human and economic damage caused by them unless we find resources to replace fossil fuels.
2. ACCUMULATION OF GREENHOUSE GAS GENERATED AS A BY-PRODUCT OF INDUSTRIALIZATION
The main driver of climate change is the greenhouse effect. Some gases in the Earth's atmosphere act a bit like the glass in a greenhouse, trapping the sun's heat and stopping it from leaking back into space and causing global warming.
Many of these greenhouse gases occur naturally, but human activity is increasing the concentrations of some of them in the atmosphere such as carbon dioxide (CO2), methane, nitrous oxide, fluorinated gases etc.
2-1) GREENHOUSE GAS & METHANE
Methane is a more powerful greenhouse gas than CO2, but has a shorter atmospheric lifetime.
2-2) GREENHOUSE GAS & CARBON DIOXIDE
CO2 produced by human activities is the largest contributor to global warming. By 2020, its concentration in the atmosphere had risen to 48% above its pre-industrial level (before 1750). Other greenhouse gases are emitted by human activity in smaller quantities.
2-3) GREENHOUSE GAS & NITROUS OXIDE
Nitrous oxide, like CO2, is a long-lived greenhouse gas that accumulates in the atmosphere over decades to centuries. Natural causes, such as changes in solar radiation or volcanic activity are estimated to have contributed less than plus or minus 0.1°C to total warming between 1890 and 2010