Which is an example of physical weathering?(1 point)
Responses
bits of iron in rock rusting when exposed to oxygen and water
bits of iron in rock rusting when exposed to oxygen and water
microscopic organisms producing compounds that break down rock
microscopic organisms producing compounds that break down rock
a crack in rock growing larger as water freezes in it
a crack in rock growing larger as water freezes in it
lichen releasing a weak acid that dissolves rock