Rift valleys can form when fractures in the Earth's crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the types of tectonic activity that forms rift valleys? a.)
b.)
c.)
d.)

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

All organisms contribute some water to the water cycle by conducting

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