Conservation methods are needed worldwide for many reasons. all but one is a reason to support conservation

Ared apple is illuminated by a blue light the apple will appear

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

What is friction? how does it affect the motion of an object?