Why am i breathing through one nostril? it's making it hard for me to sleep, and depending on which side i lay one it will go to that side of the nostril.

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

Why would a person’s self-esteem affect his or her health?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the dependent variable in galileo's experiment?