Define solar system.
Mention 3 types of energy.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

What does the law of conservation of mass state?