Recent studies based on satellite observations of the Sun are beginning to suggest that variations in solar output could be responsible for some of the climatic variations observed in the past few hundred years,
but the effects are probably small in comparison to other factors.
Indicate whether the statement is true or false.
Answer: TRUE
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What is the effect of removing material from the downslope end of a landslide? What will be an ideal response?
Which of the following describes the frequency of tornadoes in Canada?
A. most frequent in spring, least frequent in fall B. most frequent in summer, least frequent in fall C. most frequent in summer, least frequent in winter D. most frequent in spring, least frequent in winter
Wood pellets are produced from the waste sawdust of lumber and paper mills. Home-heating stoves burning these pellets can heat homes directly, instead of relying on other energy sources. Heating your home with wood pellets is
A) sustainable, less polluting, and more efficient than heating a home using electricity from a coal-fired power plant. B) sustainable, much more polluting, and about 30% more efficient than using electricity from a coal-fired power plant. C) not sustainable but is less polluting and is about as efficient as using electricity from a coal-fired power plant. D) not sustainable and pollutes more than using electricity from a coal-fired power plant.
If an atom has an equal number of electrons and protons, it would be considered ________
A) electrically neutral B) electrically positive C) electrically negative D) metallic