Sound waves travel fastest through?

a.) air
b.) steel
c.) water
d.) vacuum

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility