consists
extends
passes
are
"Hiking through these mountain ranges is very challenging." The active verb is "is". There is also a gerund, "hiking" which serves as the subject of the sentence. The subject clause is "Hiking through these mountain ranges", so even though "hiking" is a verb form, a gerund, it is not the verb in this sentence; it is part of the subject clause.
The rest of the passage contains other types of verb clauses, so you need to study those until you understand them! (:
Answer: they were usually sent to the gas chambers
Explanation:
The young, elderly and sick all were considered useless as far as being laborers. They were separated when they arrived and the group with the elderly, sick and young usually were sent to be killed right away. Anyone that was healthy was kept alive to work
Answer:
A. the prefix a means without or not
