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  • Which of the following greenhouse gas has the greatest heat-trapping ability per molecule?
    Which of the following greenhouse gas has the greatest heat-trapping ability per molecule?
    Chlorofluorocarbon has the greatest heat-trapping ability per molecule. Also referred to as CFCs, they are composed of carbon, fluorine, and chlorine. They are commonly referred to as Freon, which is the Dupont brand name. CFCs are commonly used as propellants, as refrigerants, and as different solvents to dissolve some solutes. CFCs can cause the ozone depletion of the upper layer of the atmosphere hence the production of these compounds have been strictly controlled in accordance with the Montreal Protocol. Instead, they are being replaced by HFCs. They have a tetrahedral symmetry just as there is in the simple alkanes.

  • What is the concentration of food colouring in Parts per Million (ppm)? 1 mL of food colouring was put into a solution of 99 mL of water.
    What is the concentration of food colouring in Parts per Million (ppm)? 1 mL of food colouring was put into a solution of 99 mL of water.
    I still got it wrong even though i write 10,000

  • What is the second place sewage in a Sewage Treatment Plant?
    What is the second place sewage in a Sewage Treatment Plant?
    Secondary Treatment because in the science in action 9 textbook first place to go is primary, second place to go is secondary and third place is tertiary.

  • What are most of the Earth's deserts characterized by?
    What are most of the Earth's deserts characterized by?
    Most of the Earth’s deserts are approximately 30 degrees both North and South. This fact is because these locations are characterized by descending dry air currents. Most deserts are hot and their latitudes run close to the equator. There is a name for the latitude that most desserts share, they are referred to as horse latitudes. In horse latitudes the constant high pressure systems drive away the rain clouds. This is why the result is that it hardly ever rains in the desert. It can also help to explain why the temperatures are always so hot in most of the deserts.

  • What processes example is this? An industry uses natural gas for manufacturing and uses the waste heat to produce electricity. 
    What processes example is this? An industry uses natural gas for manufacturing and uses the waste heat to produce electricity. 
    The answer to this is A. The use of this type of method can help reduce the number of carbon emissions that are released to the environment. A lot of times, this is the method that is most effective and most efficient too. It is not a surprise that a lot of industries are starting to use this especially if they want to show that they are being more sustainable as compared to before. A lot of companies have contributed to the pollution that people are experiencing now. The fact that major companies are making some changes means a lot to the world and to the future generation.

  • What will be the population in 40 years if the growth rate remains constant? A countrys current population is 100 million with an annual growth rate of 3.5%.
    What will be the population in 40 years if the growth rate remains constant? A countrys current population is 100 million with an annual growth rate of 3.5%.
    Since, the growth rate is constantand in​​​1 year country current population is 100 milliontherefore,in 40 year country population is 10040=400 million

  • What is the primary environmental advantage of natural gas relative to gasoline as a transportation fuel? Some automobiles in the United States are fueled by natural gas. 
    What is the primary environmental advantage of natural gas relative to gasoline as a transportation fuel? Some automobiles in the United States are fueled by natural gas. 
    The answer to this is D. It cannot be denied anymore that so many things have changed with the world. The world, in general, seems to be warmer. There is also more population in cities as compared to before. There are so many things that can contribute to the problems of the environment and the best thing that people can do is to try lessening those factors. The use of natural gas is one such option but some people are saying that this may not be enough. Some are proposing to use their bikes instead or to walk when traveling short distances. Some people are willing to do this but others just cannot live without their cars.

  • What refers to the atmospheric disturbance and recurrent ocean warming?
    What refers to the atmospheric disturbance and recurrent ocean warming?
    I don't understand why it is not also El Nina

  • Which of the following is least likely to be an effect of global warming?
    Which of the following is least likely to be an effect of global warming?
    Over the past few hundred years, humans have increased the species extinction rate by as much as

  • Which contaminants presence would be the strongest indicator that municipal sewage sludge is unfit for use as fertilizer?
    Which contaminants presence would be the strongest indicator that municipal sewage sludge is unfit for use as fertilizer?
    D is the answer to this question. Heavy metal is known to be highly toxic especially when it is exposed to the environment. One example of heavy metal is arsenic which is known to be very toxic especially when consumed by living things. There are a lot of deaths that have occurred because of arsenic poisoning. The appearance of heavy metals will contaminate the sewage sludge and make the mud unfit to become fertilizer. One can only imagine how hard it is going to be when it is used to grow plants. The plants may start to grow and still have traces of the contaminants. It may only hurt those who would consume the plants in the long run.

  • Which of the following greenhouse gasses has the greatest heat-trapping ability per molecule?
    Which of the following greenhouse gasses has the greatest heat-trapping ability per molecule?
    Out of all the greenhouse gases, it is chlorofluorocarbon that can be considered as the most popular. Chlorofluorocarbon is also known as CFC. This is known to trap heat. This explains why the world is getting hotter as the years pass by. Each atom is known to stay in the air for about 100 years. This is known to destroy the ozone molecules for a long time. As the ozone layer becomes even weaker and thinner, the sun’s heat penetrates the earth’s atmosphere more and more. Take note that all of the options mentioned above can have heat-trapping features but CFCs may provide the worst effect.

  • Which of the following is an environmental problem associated with abandoned coal mines?
    Which of the following is an environmental problem associated with abandoned coal mines?
    1. B. Acid drainage due to leaching of spoil heaps by rainwater

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