Answer
The five basic controls of soil formation:
Parent material
Climate
Plants and animals
Time
Topography
Among the five basic controls, climate is the most influential in soil formation.
Work Step by Step
Refer to the answer above.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.