What are some advantages and disadvantages of synthetic natural gas??
Fill in the blank(s) with the appropriate word(s).
Converting solid coal into synthetic natural gas removes sulfur and most other impurities from the coal. However, compared to burning coal directly, producing synfuels requires the mining of 50% more coal. Producing and burning synfuels could also add 50% more carbon dioxide to the atmosphere. As a result, synfuels have a lower net energy and cost more to produce per unit of energy than coal production.
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When ice crystals grow primarily through riming:
A) the result will be powder snow for skiers. B) the formation must be taking place in very cold clouds. C) the resulting snowflakes will be so small that they will gently float to the ground. D) the result will be a dense and wet snow.
Groundwater moves ____
A)only when experiencing recharge B)in ways that are unpredictable C)only in a downward direction D)from areas of low pressure to high pressure E)from areas of high pressure to low pressure
Which of the following can best be classified as "soil constraints"?
A) Cold climate B) Moderate to heavy rainfall C) Poor drainage, salinity, and high levels of aluminum D) Low erosion potential and high levels of phosphorus
What do all volatile organic compounds have in common?
A. All are gases in the atmosphere. B. All are produced synthetically. C. All are emitted from processing and/or burning fossil fuels. D. All are greenhouse gases. E. All are naturally occurring colorless and odorless gases found in rocks and vegetation.