HELP IM DOING A TEST RN Find gravitational forces between 53 kg Maria and the earth, if Maria is standing at the sea
level, a distance of 6.38 x10^6 m from earth's center. Round your answer to the nearest whole
number.
A. 5890
B. 518
C. 284750
D. 4.56 x 10 ^-22

Which is not a step in the rock cycle?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?