Given a scientific question, generate a correct answer to it.

Input: Consider Input: Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings; the chemistry of these compounds is called what?

Output: organic chemistry

Input: Consider Input: What bodily defense can be acquired in an active or passive way, and can be natural or artificial?

Output: immunity

Input: Consider Input: What also receives input from other areas of the forebrain through the medial forebrain bundle?
Output: hypothalamus