Its for an assingment and i have to get it done tonight!
2006-09-21 10:36:10 · 4 answers · asked by kenzpotter 1 in Science & Mathematics ➔ Earth Sciences & Geology
Depends on what kind of rocks.
Some kinds of rocks can be "decomposed" by acid. Lichens do that a bit -- secrete acid onto the stone. I'd bet there are also some bacteria that would do that to some kinds of rocks too.
Mechanical -- see above for the roots-into-cracks. Once a crack has started in a rock, water can get into the crack, and further erode the rock. Also, water can freeze and expand in a crack, further enlarging the crack.
2006-09-21 11:02:53 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Well the most efficient way for a living organism to break down rocks would be to become an inmate in a state prison in the southern USA
2006-09-21 10:44:47 · answer #2 · answered by Strangerbarry 4 · 0⤊ 0⤋
The roots of trees can get into cracks in rocks. When the roots grow they expand and crack the rock open more.
2006-09-21 10:43:58 · answer #3 · answered by Anonymous · 1⤊ 0⤋
There are some mollusks that can bore into rock, such as piddocks.
2006-09-21 11:04:50 · answer #4 · answered by PaulCyp 7 · 0⤊ 0⤋