The Steepest Stream Gradients Tend to Occur _____

question 15

Multiple Choice

The steepest stream gradients tend to occur _____. ​

• A)in a stream's floodplain
• B)in a stream's delta
• C)in the lower stream course
• D)in the middle stream course
• E)in the upper stream course

---

Definitions:

Bioaccumulation

The buildup of a persistent toxic substance, such as certain pesticides, in an organism’s body.

DDT

Dichloro-Diphenyl-Trichloroethane, a synthetic insecticide used historically for malaria and pest control, now banned in many countries due to environmental impact.

Nitrogen Cycle

A biogeochemical cycle that describes the transformations of nitrogen and nitrogen-containing compounds in nature.

Nitrogen Fixation

The process by which nitrogen gas from the atmosphere is converted into ammonia by certain bacteria, making nitrogen available to living organisms.