Given that a shape is a parallelogram, which of the following is sufficient to state that it is also a rectangle? a. the opposite sides are of equal length. b. the diagonals are of equal length. c. the opposite sides are parallel. d. the diagonals bisect each other. select the best answer from the choices provided

What is the mercury length of time for one revolution around the sun?

Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.