I think the adjective is noise because it is a very loud sound that is irritating.
Answer:
The top lesson she learned is that if she wants to help others, the first person she needs to take care of is herself.
Answer:
A conditional grammar is a type of grammar that makes use of conditions or dependent variables.
I'm not sure what your question is (if there is one) but some examples of conditional grammar is
A. If it rains, then we would go see the movie.
B. My mother will come visiting if she gets off work early.