Which is an example of physical weathering?(1 point)

Question

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

Answer 1

a crack in rock growing larger as water freezes in it