If you have immunity to a disease: * a .It cannot enter your body
b. Your body can fight the disease off before it makes you sick
c. The germs change as soon as they enter your body
d. You will be able to recover quickly

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?