Answer:
1) C. simile
2) Dangerous Polluted Pleasant
Yes No No
3) C. tornados pose challenges for scientists
4) However, Scientists decided<u> the experiment was as unsafe as a leaky boat </u>and dropped the project.
Explanation:
1) A simile compares two diffrent things and uses words such as "like" or "as".
2) They didn't go on with the experiment because it was too dangerous, which is the opposite of pleasant.
3) A and B can't be because it was dangerous and hard to study it, since TOTO failed and was too dangerous, I don't think they'll be trying teh same thing next time. D is also incorrect because it is dangerous to stand in front of a tornado and not fun. That only leaves C which is what the text describes.
4) They use a simile again using "as" to compare the safety of the experiment to a leaky boat.
If the underlined part was stars and stripes, that's true. The first flag adopted in 1777 was called the stars and stripes. I've never been able to figure out exactly how long the revolutionary war lasted. If 1783 was the end point, then that part dealing with the revolutionary war is also true.
i have been looking its most likely the first one
2 4 I think is the answer