Inputs of solar energy drive atmospheric circulation, and thus climate. Changes in insolation could alter climate. Humans know little about variations in the amount of solar radiation reaching Earth, because it is difficult to observe the Sun through the filter of the atmosphere. 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 last few hundred years and may have caused some of the warming of the twentieth century.
a. Recent studies using satellite observations suggest that solar output could be responsible for some of the climate variations and possibly global warming.
b. Global warming is directly caused by the variations of solar energy produced by the Sun.
c. Since solar energy affects atmospheric circulation, it is possible that it controls the climate worldwide.
d. Until recently humans have known very little about the Sun because of the dense atmosphere of the Earth.
a
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Change the underlined words to the first person plural command. Tenemos que levantarnos temprano.
Fill in the blank(s) with the appropriate word(s).
Patient #2 Symptôme: __________ Diagnostic: __________
What will be an ideal response?
(verse)
What will be an ideal response?
If pronouncing an unfamiliar word aloud does not help you figure out its meaning, your next step should be to
a. look it up in a dictionary. b. refer to a thesaurus. c. analyze its prefix, root, and suffix. d. look for context clues in the sentence or paragraph