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1 The Habitable Planet Interactive Labs: Ecology Lab Summative ssessment: riteria E & F (Processing data & ttitudes in Science) Name: The Producers: Step 1 (Primary olonizers). Given the two fictitious species of plants in the simulator, predict what will happen in this young system and record your prediction:. Then run the simulator to 100 time steps and record the population numbers for both plants. Starting Step 10 Step 20 Step 30 Step 40 Step 50 Step 60 Step 70 Step 80 Step 90 Step 100. reate a scatter plot graph with a best fit line to represent your data: D. What assumptions does this model make about co-dominance? E. What assumptions does this model make about the general terrain of the environment? F. Do you find one producer to be dominant? Why might one producer be dominant over another?
2 The Producers: Step 2. lick on herbivore (the rabbit) and choose "eats plant." Predict and record what will happen to the population numbers in the ecosystem.. Then run the simulator to 100 time steps and record the population numbers for both plants. Starting Step 10 Step 20 Step 30 Step 40 Step 50 Step 60 Step 70 Step 80 Step 90 Step 100. reate a scatter plot graph with a best fit line to represent your data: D. Does adding the herbivore establish a more equal field? E. Is one producer still dominant over the other? Why might one producer be dominant over another? F. If the simulation included decomposers, how would your current results change?
3 G. How do producer population numbers with the presence of an herbivore compare to the primary colonizer model? H. What is the "competitive exclusion principle?" I. How do consumers aid diversity in an ecosystem? Food Web: Step 1. hoose only one organism from each trophic level and make sure that the food chain goes in a straight line from one trophic level to the next, i.e., Herbivore eats, Omnivore eats Herbivore, and the Top eats Omnivore. Let survive on its own and see what happens. Record your predictions below:? Herbivore? Omnivore? Top?. Run the simulator twice and record your data.?? Herbivore? Omnivore? Top?? Herbivore? Omnivore? Top. What differences were there between your prediction and the simulation?
4 D. Did any of the species increase in number? What could account for this increase? E. Which species decreased in number and what might account for this decrease? F. Which populat ions would benefit t he most from t he presence of decomposers? Food Web: Step 2. This time click the "all on" button. The model shows who eats whom and the paths by which energy is transferred. Predict which populations will die out, increase in numbers, or decrease in numbers and record your predictions. Herbivore Herbivore Herbivore Omnivore Omnivore Omnivore Top. Run the simulation twice and record the results in your Data Table. Herbivore Herbivore Herbivore Omnivore Omnivore Omnivore Top Herbivore Herbivore Herbivore Omnivore Omnivore Omnivore Top. What differences were there between your prediction and the simulation? D. Which way does energy flow?
5 E. How does eating an organism result in energy transfer? Food Web: Step 3 (Key to Summative ssessment). Modify who eats whom in order to ensure the survival of all species.. reate a chart below to record your food chains.. reate a data chart below to record your data on all species for a 100 run cycle. Make sure to record your data for every 10 steps. D. reate a scatter plot graph with a best fit line to represent your data.
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