Dark energy is a term used to describe a. the driving force behind the big bang. b. the origin of new matter in the steady-state theory. c. electromagnetic energy outside the visible spectrum. d. what is causing the increasing rate of expansion of the universe.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?