Study the figure below and predict which of the following components would best indicate the overall biotic health of an aquatic
ecosystem?
A.) Particulate amounts
B.) Sedimentation rates
C.) Species abundance
D.) Water quality
A.) Particulate amounts
B.) Sedimentation rates
C.) Species abundance
D.) Water quality
1 answer:
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Answer:
D) It would contain less nitrogen.
Explanation:
In an investigation of the cycling of environmental gases, a student placed water and bromthymol blue in each of four test tubes as shown in the diagrams below. No additional items were placed in tube 1, a snail was placed in tube 2, an aquatic plant (elodea) was placed in tube 3, and both a snail and an elodea were placed in tube 4. The tubes were then stoppered and placed in bright light for 24 hours. The solution in tube 3 changes after 24 hours because it would contain less nitrogen.
The dfferent tubes are shown in the picture that I uploaded.
