Each photo shows an example of weathering and erosion. match each photo with the element that caused the weathering and erosion. match each with either water, vergetation, oxygen wind. find the pairs. you

Explanation:

First picture (solo structure in desert): Wind.  The wind has sculpted this by throwing grains of sand to the structure... it's a natural sandblasting job.

Second picture (rock and sea): Water.  The constant waves hitting the rocks are sculpting and eroding it.  I suspect some freezing and thawing (still water) was also into play.

Third picture (roots): vegetation.  The roots of trees are very powerful and they'll destroy anything on their path seeking water.

Fourth picture (white and red): oxygen. That's a rusty piece of metal, the red comes from the oxydation, meaning blend of the metal with oxygen.