Which observation will best determine whether raccoons are more closely related to bears or to cats? a
Investigate the habitat of each animal.
b
Compare the skeletons of each animal.
c
Record the diet of each animal.
d
Examine the skin color of each animal.

When scientist examine data such as historical documents, they are using the "scientific methods"

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on