<span>If an animal like the snake were to be removed from a food chain, the entire ecosystem could easily fall apart. It will be destroyed. As we all know that it is a chain. Say that a herbivore such as a mouse that feeds on grass was too be removed. And that the mouse would be eaten by a snake..the snake population would decrease from starvation and the grass would increase.</span>
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:
is there some options or a picture?
Answer:
It might be the fourth one
A pronoun is a proper noun. Like a name, name of a company or referring to self “I”
