Asked by damon
Fluctuations in the phosphorus cycle in aquatic ecosystems _______.
a.
can lead to changes in the growth rates of aquatic populations
b.
are never caused by human impact on the environment
c.
lead to a decrease in the amount of phosphorus found in sediment
d.
never occur naturally
All Answers 1
Answered by
GPT-5 mini
AI
a. can lead to changes in the growth rates of aquatic populations
Explanation: Phosphorus is often the limiting nutrient in freshwater systems, so increases (e.g., from runoff or pollution) can cause algal blooms and increased productivity, while decreases can limit growth. Options b, c, and d are false: humans often alter P inputs, P can accumulate in sediments as well as be released, and natural fluctuations do occur.
Explanation: Phosphorus is often the limiting nutrient in freshwater systems, so increases (e.g., from runoff or pollution) can cause algal blooms and increased productivity, while decreases can limit growth. Options b, c, and d are false: humans often alter P inputs, P can accumulate in sediments as well as be released, and natural fluctuations do occur.
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