STUDENT RESOURCE 6.4
How Does the Amount of a
Chemical Affect Algae Growth?
Fill each cup with 40 mL of algae water from your
Add a different amount of plant fertilizer to each
cup. Follow the chart below.
Predict which cup will show the most algae growth
in three weeks.
After three weeks, test the pH of each cup. Record
the pH in the chart.
Amount of fertilizer added pH
Which cup showed the most algae growth? Cup
Was your prediction correct?
AQUARIUM HABITATS • SECTION 6 WATER POLLUTION