First question, yes. it is very possible
second question, I'm not too sure
This is an example of<span> "appetite".</span>
<span>Appetite refers to the desire or want to eat food, some of the time because of hunger. Engaging nourishments can empower craving notwithstanding when hunger is missing, in spite of the fact that craving can be significantly lessened by satiety. Appetite exists in all higher living things, and serves to manage sufficient vitality admission to keep up metabolic requirements. </span>
Depends what your studying on