Question

1. describe evidence the algae in the tank are dying from hour 400 to 600. view time lapse of water color cell density observation a interpretation b dissolved oxygen doesnt change increases d water color decreases f

Explanation:

Algae are photosynthetic organisms. When they die, their cell density decreases as the number of living cells drops. Dissolved oxygen may increase as the decomposition process by bacteria consumes less oxygen compared to the oxygen - producing photosynthesis of living algae. The water color may decrease in intensity as the pigments from the algae are no longer present or are breaking down.

Answer:

Cell Density Observation: Decreases
Cell Density Interpretation: Number of living algae cells is dropping
Dissolved Oxygen Interpretation: Decomposition consumes less oxygen than photosynthesis by living algae
Water Color Interpretation: Pigments from algae are breaking down or no longer present