Becky leaves home and rides a distance of 30km it took her 2.5 hours what is her speed

More solar radiation is absorbed by earth’s surface than by

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.