Which of the following landforms rises well above its surroundings? a. a canyon b. a plain c. a valley d. a mountain

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?

The standard deviation of a population is 3.2.what is the margin of error? enter your answer in the box.

Sean has a bag with 15 marbles. six of the marbles are red and 9 are blue. if sean draws one marble from the bag the probability of drawing a red marble is