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sergey [27]
3 years ago
7

Please help!!!

Physics
2 answers:
Grace [21]3 years ago
5 0

Out of

  1.  Frost wedging
  2.  Animal activity
  3.  Oxidation; and
  4.  Abrasion,

I'd say <u><em>3. Oxidation</em></u>.

aksik [14]3 years ago
3 0
The answer is #3: Oxidation because oxidation is when a substance reacts with oxygen, which causes the substance to rust.  When a rock contains iron and that iron comes in contact with oxygen, iron oxide is created; this weakens the rock.  
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