Answer: The duodenum, jejunum, and ileum.
Explanation:
The jejunum is roughly 2.5 meters in length, contains plicae circulares (muscular flaps) and villi to absorb the products of digestion.
B because when erosion occurs through wind and water it takes away the topsoil for plants to grow.
I believe it could be B but i am not 100% sure
