ACTIVITY SHEET

PREDICTING ORGANISMS

Directions: (A) Before conducting the stream survey, list each kind of organism you expect to find in the stream and predict the number of organisms of this kind you will retrieve in your collection bottles. (B) During your analysis of organisms actually found in your collection bottles, record each kind of organism and the number of each. 

 

Organism

Number

Predicted

C = Clean
UH = Unhealthy

 

Actual

a

 

Total Number Found

(all collection bottles)
  C =  

 

 

UH =
  C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =
  C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

 

 

C =

 

 

 

 

UH =

Hypothesis: The most important limiting factor of a population of organisms in a stream is: 

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