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ACT
ACT Science Section

Investigation of Nutrient Impact on Algal Density

Hard Data Representation Understanding Graphs And Tables

A researcher is investigating the impact of different levels of a specific nutrient on algal bloom density in a freshwater lake. Data was collected over a three-month period, with various levels of nutrient added to separate areas of the lake. The results are summarized in the table below:

Nutrient Level (mg/L)Average Algal Density (cells/mL)
0500
101500
203000
304500

Based on the data above, which nutrient level corresponds to the highest average algal density?

Hint

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% Correct94%