Help! I don't know if it's abrasion or ice wedging A rock that is exposed to heating and cooling over and over again will eventually crack and break into smaller pieces. This is an example of what type of mechanical weathering?
A abrasion
B acid rain
C ice wedging

It should be “A”. Abrasion

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

Hi + naoh -> h2o + nal