Your Biology Professor Takes the Class on a Field Trip

Multiple Choice

Your biology professor takes the class on a field trip to a local lake.You spend an hour studying the lake and writing down all observations.You hypothesize that the lake is oligotrophic.Which observations would support this hypothesis? Check all that apply.

A) The shoreline is mostly rock and sand with very little vegetative matter.
B) The lake has extensive aquatic plant beds.
C) The lake has little planktonic growth.
D) The bottom of the lake is easily visible.
E) An oxygen probe reveals low oxygen content in the water.