The law of conservation of energy states that energy is created or destroyed under ordinary conditions, but it may not be changed from one form to another
Indicate whether the statement is true or false.
Answer: FALSE
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The main problem with use of conventional natural gas as a transportation fuel is
a. the expensive engine modifications required to convert an automobile for use of natural gas b. the fact that it has higher CO2 emissions than gasoline produced from conventional oil c. the very low reserves, which could supply U.S. needs for less than 25 years d. the fact that not many fueling stations exist at present e. it can only be obtained by fracking
Which of the following is considered a softcopy map?
A. a map to be posted on the Internet B. a map to be used in a PowerPoint presentation C. a printed map D. both a map to be used in a PowerPoint presentation and a map to be posted on the Internet E. both a map to be posted on the internet and a printed map
Deviations from the average strength of Earth’s present-day magnetic field are called
____________________. Fill in the blank(s) with the appropriate word(s).
In China, reforestation projects have been undertaken to
A. return the buffalo to the North China Plain. B. replant the rainforest in southern China. C. diminish water pollution in the Yangze River. D. halt encroachment of the Gobi and Taklamakan Deserts.