Which factor has the least effect on the weathering of a rock?

Question

1.climate

2.composition of the rock

3.exposure of the rock to the atmosphere

or

4.number of fossils found in the rock.

Answer 1

Using elimination

1.Climate means heating/cooling which equals cracks, it means rain and wind.  Therefore we can rule this out.

2. Composition means if it's sandstone or graphite.  This has a huuge role in how quickly it's weathered down so rule this out too.

3. This one is a bit more difficult as it depends on what kind of atmosphere it is.  However if the atmosphere involves wind, moisture and even just exposure it will weather it down more too.  Take ayers rock in australia for example.  It's unexposed part is apparently 3 times bigger than what we can see.

4.  Although fossils in a rock may make it overall weaker in structure, which would increase the speed of weathering.  It is still minerally based and is also internal to the rocks structure so it wouldnt have as much effect on processes which weather the rock down..this is my answer due to these reasons.

Hope this helps and good luck!

Answer 2

choice 4...weathering is done by 3 three things:

1. chemical - when chemicals react with the rock and break it down

2. physical - wind and water abrade and erode the rock

3. biological - living organisms like lichen and moss excreet basic and acidic chemicals that break down the rock

so out of those fossils have nothing to do with it

Answer 3

What does the amount of fossils have to do with weathering?

Choice 4.

Answer 4

choice 4

Answer 5

# 4

Answer 6

space--it has no atmosphere

Answer 7

I'm pretty sure that it is the number of fossils.