Which is the following is an example of chemical weathering
a) wind breaking into small pieces
b) ice breaking apart cracks into a rock
c) water smoothing a rock in the stream
d) minerals in rock becoming powerdy and rusty

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.