posted by Anonymous .
a large portion of the water that falls on the earth is absorded by plants and used in photosynthesis. the plants secure the soil with their spreading roots
which of the following practices would contribute the most to periodic flooding in an area ?
A building terraces on farm land with sloping fields
B. constructing dams to generate electricity
C. planting vegetable crops along water ways
D. removing the natural plant cover and leaving the land barren
D is probably the "correct" answer your teacher is hoping for.
This is a really bad question, in my opinion, and it is based on a false stated premise.