Sam's astronomy class is watching a film that shows astronauts walking on the surface of the Moon. The astronauts appear to bounce as they
move. Why do astronauts move this way when they are walking on the
moon?
A: Astronauts weigh less on the Moon
B: Astronauts have less mass on the Moon
C: Astronauts have less density on the Moon
D: Astronauts have less volume on the Moon

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

a:

by the combination of an unlimited number of elements

10 years is the answer