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for some people, the morning isn’t complete without one, two, or even three cups of coffee. this is probably because caffeine, found in coffee, tea, chocolate, and soda, can increase a person’s alertness and produce a sense of well-being. it also decreases fatigue and boredom. on the other hand, caffeine can be very bad for one’s health, causing insomnia, headaches, nervousness, dizziness, disturbed sleep, and stomach upset. in women, caffeine may aggravate symptoms of pms and increase their risk of osteoporosis.

the selection’s main pattern of organization is: (click on the pattern of organization.)

a. definition and example.

b. comparison.

c. contrast.

d. cause and effect.

Writers can create sound effects in poetry by utilizing sound devices. a dictionary. mnemonic devices. capitalization.

Skill check questions rearrange the paragraphs below into the correct sequence. that's because engineers on the ultraclean project have invented a self-cleaning, antibacterial metal surface that repels water with an intricate layer of laser-engraved valleys. when it rains, the lotus does not become damp; the water simply trickles off in fat droplets, taking any bugs and dirt with it. the drudgery may not be around much longer, however, if a team of italian scientists has anything to do with it “it's simply an amazing plant,” concluded professor luca romoli, leader of the project, “and we've succeeded in mimicking it. magnifico! ” few tasks in life hold less joy than scrubbing the ghost of somebody else’s porridge from a saucepan. the starting point for the research was the leaves of the lotus flower.

Which is it? the desert is than the mountains? 1. drier 2. more dry