The planets and the sun form the solar system. The sun is an enormous star. The planets move around the sun. Mercury,Venus,earth, and Mars are the four small rocky planets. Jupiter, Saturn, Uranus, and Neptune are the four giant gas planets
The Vacuole stores water,food,and waste
Not all units of measurement are equal, but the value of each unit is used for its intended purpose, so we have different units of measurement for each problem.