The majority of the world's energy is produced by burning fossil fuels. Fossil fuel combustion results in the release of carbon
dioxide and other greenhouse gases into the atmosphere. Which of the following is the most likely risk of using fossil fuels as an energy source? A.
When large amounts of carbon dioxide enter the atmosphere, the gas accumulates in toxic amounts in the human body.
B.
The release of large amounts of greenhouse gases can change Earth's climate.
C.
Adding greenhouse gases to the atmosphere helps plants perform photosynthesis more efficiently.
D.
Greenhouse gases cause the ozone in the stratosphere to break down, leaving Earth vulnerable to UV radiation.
The correct answer is option B, that is, the release of large amounts of greenhouse gases can change Earth's climate.
Fossil fuels refer to hydrocarbons, mainly fuel oil, coal, or natural gas, produced from the leftovers of dead animals and plants. The use of fossil fuels has allowed large-scale industrial development and hugely supplanted water-driven mills, as well as the combustion of peat or wood for heat.
The burning of fossil fuels by humans is the biggest source of emissions of carbon dioxide that is, one of the greenhouse gases, which permits radioactive forcing and donates to global warming. One of the dreadful effects of global warming is the change in the climatic condition of Earth.
Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons. It takes energy to remove valence electrons from an atom and form a positive ion. Energy is released when an atom gains valence electrons and forms a negative ion.
