Why am i so sad all the time

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?

Which materials are part of a person’s body composition? select three options.1. fat2. supplements3. water4. protein5. medication

What is the best way to dispose of confidential information in a health care facility