Answer:
compare and contrast.
Explanation:
The passage starts with a statement backed by popular opinion, "Most people think of sleep as a time when the mind and body can rest after a day of activity." After this it throws a curve ball giving a statement backed by fact, saying, "doctors know much more than that." The passage proceeds to explain what doctors know, which is comparing and contrasting, popular belief and fact.
This is pretty much the whole structure of this informational passage.
Answer: B. challenging established ideas.
Explanation: In the given conversation, we can see that Han is asking a question about a published article, he is asking about whether or not the article was biased because the writer could only want to stir up a controversy to get money and fame. By asking that question Han is showing the group discussion technique of challenging established ideas, so the correct answer is option B.
In balanced forces, the magnitude of the two forces is equal, whereas, in the case of unbalanced forces, the magnitude of the two forces are unequal. In balanced forces, the two individual forces act in opposite direction. Conversely, in unbalanced forces, the individual forces either act in same or opposite direction And it affects it because Balanced Forces acting on an object will not change the object's motion. Unbalanced Forces acting on an object will change the change the object's motion.