Which piece of information is not necessary to calculate the force of gravity between two objects, a and b? a. the mass of object a. b. the mass of object b. c. the velocities of a and b. d. the distance between a and b.

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d