As a result of human agriculture and urbanization, and more recently large-scale phosphorus mining, the amount of phosphorus in Earth's freshwater and terrestrial ecosystems has nearly quadrupled.This suggests that recent increases in algal blooms in many lakes might be occurring because phosphorus
A) is no longer a limiting factor.
B) has become a limiting factor.
C) is no longer entering its major pools.
D) is no longer cycling through organisms.
E) levels on Earth have increased.

Question

Quizplus · Accepted Answer

The increase in phosphorus due to human actions suggests that it is no longer a limiting factor for algal growth. This supports choice A as the best answer.

As a Result of Human Agriculture and Urbanization, and More