(Question)
Q: What has the average global temperature done since the 1900s? Choices: - stayed constant - changed randomly - decreased - risen A:
(Answer)
risen

(Question)
Q: What equals the mass of the object (in kilograms) times the acceleration due to gravity (9.8 m/s 2 )? Choices: - speed of light - density - velocity - weight A:
(Answer)
weight

(Question)
Q: What technique is used by insects and birds to find food, mates, and safety from predators? Choices: - playing - sleeping - mating - flying A:
(Answer)
flying