What best describes the changes occurring to the Earth's surface over time? A. Mountains are gradually wearing down, but no new ones are formed.
B. New mountains are only formed under the ocean.
C. New mountains are being formed as old mountains are gradually worn away.
D. More mountains are gradually formed as the ocean recedes.

Which of the following is not a benefit of green revolution? a) new crop varieties b) increased crop yields c) cost effective d) new crops may require larger amonts of water than the previous ones.

Moving down the ramp from 6 meters to

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit