Which is an example of physical weathering? (1 point) acid rain breaking down compounds in rock statues
rock breaking apart when it falls from a cliff
O oxygen interacting with minerals in rock
Obits of iron in rock rusting when exposed to oxygen and water

The answer is bits of iron in rock rusting when exposed to oxygen and water.

Explanation:

Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. ... Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.

5.4%

explanation:

the acceptance rate for harvard is 5.4%. this means only 5 percent of people who apply actually get accepted!

doctrine that the us had the right to expand throughout north america.