Which research source would you use to find the origin of the word sophomore?
a) thesaurus
b) french textbook
c) grammar textbook
d) oxford english dictionary,/i>

To form soil, the two processes which must occur are erosion and weathering, so the correct answer is "soil formation is a continuous presses, but also one which takes a long time, it can sometimes take more than five hundred years for 1cm of soil to form.

Icannot see the passage but i’m guessing off of what the passage would be that c is the only correct answer.