A horn results when glaciers erode three or more aretes, usually forming a sharp edged peak
Explanation:
A.They filter waste and extra water from blood so they can create urine, which is removed from the body.
Answer:Variation in traits can be caused by variation in protein molecules within individuals' cells. Protein molecules' structures affect their function and the way they connect to other molecules.
Explanation: ^^^ hope it helps :)
