Please help me with 1,2,3,4 please

1) C. simile

2) Dangerous          Polluted         Pleasant

        Yes                       No                       No

3) C. tornados pose challenges for scientists

4) However, Scientists decided the experiment was as unsafe as a leaky boat 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.  

to give the reader a sense of the chaos, fear, and havoc taking place

a phrase is a set of word that make a sense, an expression formed by two or more words.

" teacher´s dictum on the possession of human "

" made a pile practicing "

" lived to an impressive age and dies "

a clause, in a grammar way is a series of words that have a complete meaning.

" was irritated by the persecution of those who called themselves "