if you start a new job in a research lab and the lab protocol states that you should check your hands for any breaks in the skin before handling infectious agents, how do you think that the epidermis is able to fight the microbial infections?

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?