Question

1. describe evidence the algae in the tank are dying from hour 400 to 600. view time lapse of water color cell density - decreases dissolved oxygen overall decrease water color - changes from green to brown. - algae reproduction equals algae death. - reproduction is greater than algae death. - algae death is greater than reproduction.

Explanation:

A decrease in cell density means fewer living algae cells. An overall decrease in dissolved oxygen can be due to less oxygen - producing photosynthesis by dying algae. A color change from green (due to chlorophyll in living algae) to brown indicates the breakdown of algae cells. All these suggest that algae death is greater than reproduction.

Answer:

Cell Density Interpretation: Algae death is greater than reproduction.
Dissolved Oxygen Interpretation: Algae death is greater than reproduction.
Water Color Interpretation: Algae death is greater than reproduction.