Usually, a river ________ at its source compared to farther downstream.
A) has less phytoplankton
B) is warmer
C) is wider
D) flows more slowly

Question

Quizplus · Accepted Answer

Typically, a river has less phytoplankton at its source because the water is colder, clearer, and often moves more swiftly, conditions that are not as conducive to phytoplankton growth compared to the conditions found farther downstream.

Usually, a River ________ at Its Source Compared to Farther