Well,
"Chem" is usually capitalized. But I believe it is the short form of the subject, Chemistry.
Answer:
a. to teach how to cook different foods
1.1 prescription
1.2 growing
1.3 changing
1.4 prescripted
Prepositions are the words which create the relationship between noun and pronouns. Usually, they are used in front of pronouns and nouns. Prepositions are the word such as, at, on, in, after and so on. These words help in describing the position of something, the time when something happens and the way in which something is done.
Sentences which uses the prepositions correctly are:
A. The school bus finally arrived at the museum. - The preposition 'at' describe the place or position of the bus where it has arrived.
C. For years, my parents differed from each other on politics- here the preposition 'for' indicates the time or duration.
The correct answer is B. The bear is peaceful because the author uses connotative words like wandered and occasionally which gives the sentence a light-hearted and peaceful tone.
