(Question)
Q: What causes oxides to decompose? Choices: - humidity - acidity - precipitation - heat A:
(Answer)
heat

(Question)
Q: Earth goes through regular changes in its position relative to? Choices: - the moon - saturn - mars - the sun A:
(Answer)
the sun

(Question)
Q: What is the measure of the force of gravity pulling down on an object called? Choices: - factor - mass - volume - weight A:
(Answer)
weight