The rock shown below is located in a cold climate. Rainwater fills in a crack in the rock. When the temperature drops the water freezes to form ice. After the water thaws, it evaporates. The crack left behind is larger than it was originally. What factor caused the rock to weather? ice

water

wind

air

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Aballet student who learns with the of his instructor is demonstrating learning.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p