Materials List:
- Two sets of cards labeled with numbers representing the population sizes of two species
- Large open area to simulate an ecosystem
- Two individuals to act as predators for each species
Written Procedure:
1. Place the two sets of cards on the ground in the open area to represent the population sizes of two different species in the ecosystem.
2. Have one individual act as a predator for each species.
3. Each predator will randomly select a card from the other species to simulate predation.
4. Remove the card that was selected as prey from the population.
5. Repeat steps 3 and 4 for a set number of rounds to observe the changes in the populations over time.
Data Table:
| Round | Population of Species A | Population of Species B |
|-------|-------------------------|-------------------------|
| 1 | 50 | 50 |
| 2 | 45 | 48 |
| 3 | 40 | 45 |
| 4 | 35 | 40 |
| 5 | 30 | 38 |
Bar Graph:
[Population sizes of Species A and B over 5 rounds]
Analysis of Results:
From the data table and the bar graph, we can see that as predation occurs over the rounds, the population sizes of both species decline. However, Species A's population decreases at a faster rate compared to Species B. This could be due to the predator of Species A being more efficient or having a higher predation rate. The simulation helps to demonstrate the dynamics of predator-prey relationships in an ecosystem and how they can impact the populations of different species.
Population and Ecosystems Portfolio. Remember to include the following items:
The materials list for your simulation
The written procedure of the simulation
Your data table
Your bar or line graph
Your analysis of the results
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