Use tide and tidal range in the same sentence.

What does it mean for a cell membrane to be selectively permable

An easy way to calculate the amount of energy available at each level is to what?

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d