559 Testing Your Comprehension 1. Fossil fuels are abundant on our planet today and can be used to create many sources of energy which is why they are so prevalent. They are considered nonrenewable sources of energy because they take millions of years to form and because humans are rapidly depleting our fossil fuels faster then they can be created‚ which makes these fuels nonrenewable. 2. Fossil fuels were formed from the tissues of organisms that lived 100-500 million years ago. The energy these
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question. ____ 1. The process of burning a fuel to change chemical energy into thermal energy is called a. heat. b. electricity. c. energy. d. combustion. ____ 2. The three major fossil fuels are coal‚ oil‚ and a. wood. b. natural gas. c. uranium. d. electricity. ____ 3. Fossil fuels are considered nonrenewable resources because they a. burn so quickly. b. are in such high demand. c. take hundreds of millions of years to form. d. pollute the air. ____ 4. Which
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them to reproduce themselves. As of now‚ crude oil or (petroleum) is the only naturally liquid profitable fossil fuel. In addition‚ natural gas and propane are normally gases‚ and coal is a solid. If these nonrenewable run out they will become to costly to harvest then humans would have to use other sources for energy. Scientist believe that coal‚ petroleum‚ natural gas‚ and propane are all fossil fuels because they where formed from non living factor such as buried remains of plants and animals that
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requirement‚ the key sources of energy means; fossil fuels are being depleted in a rapid mode which reflects that we need to concentrate over alternative sources of energy that could also prove to be eco-friendly. But‚ before discussing that it should be better to have an idea about the current scenario and where we are standing today in context of availability of energy resources. At present‚ approximately 80 percent of the energy used by us is supplied via fossil fuels which are called non-renewable energy
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evidence available to support and refute current claims of imminent threats to life on our planet and a need to actively respond now. Global Warming is an imminent occurrence that society faces on a daily basis; the effects of an increasing number of fossil fuels means that there is an increasing amount of CO2 being emitted compared to O2 which is slowly affecting the air not only humans but plants and animals breath on Earth. The greenhouse effect is a natural process that warms the Earth’s surface
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Global warming is caused by air pollution Global warming has been around our Earth for centuries‚ but recently has become a bigger problem for our environment. There has been debate whether or not global warming is a natural occurrence for our planet‚ and doesn’t really exist. While others argue that human activities is causing global warming. Global warming is caused by many things such as pollution that is damaging our environment. The causes are split up into two groups. There are the natural
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nitrous oxide have all risen dramatically because of human activities. Fossil fuel combustion‚ land-use change‚ increasingly intensive agriculture‚ and an expanding global human population are the primary causes for these increases. Other greenhouse gases found in our planet’s atmosphere include water vapor and ozone. Carbon dioxide is released into the atmosphere by the burning of solid waste‚ wood and wood products‚ and fossil fuels (oil‚ natural gas‚ and coal). Nitrous oxide emissions occur
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some environmentalists and politicians earnestly advocated biofuel several years ago‚ they were referring to the potency of biofuel to reduce our dependence on carbon-rich fossil fuels and ultimately retard carbon emission. Admittedly in sheer biological sense‚ expanded biofuel can contribute to our endeavor to cut reliance on fossil
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lighting. The largest sources of energy in the world are oil (34%)‚ coal (26.5%)‚ and gas (20.9%)1‚ adding up to over 80% of global energy. These types of fuels are called fossil fuels because they are found in fossil carbon deposits in the ground. An important difference between fossil fuels and other sources of energy is that fossil fuels are non-renewable‚ meaning that once they are used‚ they are gone and cannot be replenished. Other common sources of energy are nuclear‚ hydro‚ and solid biomass
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impacts until it hits home in that all of sacred places‚ our wallets. Changes need to be made but can we afford it or can we afford not to make the move that will ensure our future for generations to come. Fist let us look at why we chose fossil fuels. The fossil fuels we largely depend on today are coal‚ oil and natural gas. They are called non-renewable energy sources. That description is actually another way of saying we use them faster than they form. Over 100‚000 times faster to be exact! So
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