1. An environmental scientist is conducting a water quality test on the Mississippi River. The scientist is curious to see how the level of fertilizer in the water affects the growth of algae.
She goes to the lab and sets up 30 gallon buckets of water with different amounts of fertilizer in them. One group has no fertilizer, one group has 10% fertilizer, one group has 20%
and the last group has 30%. She lets the fertilizer sit in the water for a month with the same amount of sunlight and humidity
1. What is the independent variable?
2. Dependent variable?
3. Constant variables?
4. Control group?
5. Write a hypothesis:
Answers: 2
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1. An environmental scientist is conducting a water quality test on the Mississippi River. The scien...
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