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

Responses

lichen releasing a weak acid that dissolves rock
lichen releasing a weak acid that dissolves rock

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

bits of iron in rock rusting when exposed to oxygen and water

1 answer

An example of physical weathering is a crack in rock growing larger as water freezes in it. This process, known as freeze-thaw weathering, occurs when water enters cracks in the rock and freezes, causing the rock to expand and eventually break apart.