1. while scientists aren't entirely certain why tornadoes form, they have some clues into the process.
tornadoes are dangerous funnel clouds that occur during a large thunderstorm. when warm, humid air
near the ground meets cold, dry air from above, a column of the warm air can be drawn up into the
clouds. winds at different altitudes blowing at different speeds make the column of air rotate. as the
spinning column of air picks up speed, a funnel cloud is formed. this funnel cloud moves rapidly and
haphazardly. rain and hail inside the cloud cause it to touch down, creating a tornado. tornadoes
move in a rapid and unpredictable pattern, making them extremely destructive and dangerous.
scientists continue to study tornadoes to improve radar detection and warning times.
the main purpose of this passage is to:
a. show why tornadoes are dangerous
b. explain how a tornado forms
c. compare thunderstorms to tornadoes
d. explain what to do in the event of a tornado

B

Explanation:The answer is B because the passage does not really say why tornadoes are dangerous it mostly talks about how they form for example it When warm, humid air  near the ground meets cold, dry air from above, a column of the warm air can be drawn up into the clouds. And it is not C because it is not comparing thunder storms to tornadoes, it only says that a tornado can occur during a large thunder storm. And the answer is also not D because it does not say anything about what to do in an event of a tornado.

c. a group of tribes that formed a confederacy

with mrs. linde, nora reveals her insensitivity and lack of shame about the forgery she committed. she implies that mrs. linde has obviously aged since they last met 10 years earlier, which accounts for nora’s inability to recognize her old friend. although nora seems sympathetic to mrs. linde’s plight, she can’t seem to control herself from boasting about her three children, her husband’s recent promotion, and how good she feels to finally have some money to spend. in a way, she seems to be flaunting her good fortune in front of mrs. linde who, deprived of all these benefits, has come to ask nora for . it is also through her interactions with mrs. linde that we realize something deeper lies under nora’s seemingly childish exterior. she reveals the secret of her forgery to mrs. linde and seems to see herself as quite resourceful for having done it.

in the company of dr. rank, nora is freer than she is with her own husband. she openly laughs with joy at knowing that all the other bank employees will be under her husband’s control. she offers dr. rank a macaroon, apparently forgetting that he knows she is forbidden to eat them. she then quickly covers for herself by claiming that mrs. linde brought them. nora seems much more assertive and free with these other characters, as well as unabashedly willing to scheme, lie, and justify her transgressions as altruistic.  

krogstad provides an interesting parallel to nora. like nora, he too is guilty of committing forgery, for which torvald condemns him and decides to fire him. although krogstad is a man and nora a woman, their crimes of forgery unite them. in fact, krogstad might represent what nora would be like if she were a man and were not strictly scrupulous like her husband is. for example, she tells mrs. linde that "a barrister's profession is such an uncertain thing, especially if he won't undertake unsavoury cases; and naturally torvald has never been willing to do that." perhaps nora would have delved into the unsavory, given how opposite she is to her husband. krogstad's is also the only harsh voice of reality that nora is forced to hear, and that is because he blackmails her for her regaining his job at the bank. finally, torvald’s reaction to krogstad’s forgery seems to foreshadow his harsh and cold reaction to nora’s forgery.