Which two phrases describes the contents of chromosome A.)many genes
B.)many DNA molecules
C.)a single DNA molecule
D.)a single gene

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.

Idk

The right answer is c.sandstone.