Overall warming in global temperatures since 1970 can be explained only by human impact. True or false?
Indicate whether this statement is true or false.
Answer: TRUE
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In water the speed of sound
A. increases with decreasing temperature. B. increases with increasing pressure. C. all of the above. D. none of the above.
One major advantage of using hydrogen fuel cells is ________
A) that the cells are nonpolluting B) the potential for production of greenhouse gases C) the energy efficiency D) methane is produced as a by-product
The primary force causing the fast winds of a tornado is electrical
Indicate whether the statement is true or false
In a(n) ________ the erosional contact represents missing rock strata and separates sedimentary beds that are parallel.
A. disconformity B. nonconformity C. boundary layer D. basal conglomerate E. angular unconformity