What is the mechanical advantage of the inclined plane shown below

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.