Question

Due to decreased light penetration, which area of rivers and streams will have less diversity of plant life?
a.
the source
b.
the mouth
c.
the middle portion
d.
none of the above


Please select the best answer from the choices provided

A
B
C
D

Answer 1

A — the source. Headwater areas are often narrow and shaded by riparian vegetation, reducing light penetration and limiting plant diversity.