Answer:
They make challenging concepts easier to understand.
They illustrate complex concepts that are hard to picture.
They increase the level of interest in the information.
Explanation:
This sentence contains a participle, correctly punctuated.
The phrase <em>hiding in the brush </em>is the participle in this sentence (and it tells us what the leopard was doing), and it is correctly punctuated - there has to be a comma after this phrase because it is found in the beginning of the sentence, before the subject <em>the leopard. </em>
True, many non-fiction novels have been written in a style that would read just like a fictional story, such as <em>The Prince</em> and <em>1776</em>.
food rationing, letter writing, bandage making
The answer is sad and remorseful because she sounds sad