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What happened to the sheep population? Why? 

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What happened to the sheep population? Why? 

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The sheep population was more than quadrupled of the wolf population. This is because the wolf population was less than when running the simulation than normal, which allowed for the sheep population to overrule. In the beginning, there were 100 sheep and 20 wolves. Therefore, the sheep population was able to take over.

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What other switches and sliders can be adjusted to help the sheep population? Why?

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What other switches and sliders can be adjusted to help the sheep population? Why?

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The initial number of sheep, sheep gain from food, and sheep reproducing sliders can be adjusted. The wolf-sheep-grass switch may be helpful as well. This is because the sheep may have food to eat, and they also will be able to reproduce more if their reproduction slider is readjusted.

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In your own words, describe what a model is. 

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In your own words, describe what a model is. 

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The model is about the stability of predator-prey ecosystems. It shows if the ecosystem is stable (maintaining populations overtime) or if it’s unstable (populations go extinct).

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 Do you ever get different results if you run the model several times with the same settings?

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 Do you ever get different results if you run the model several times with the same settings?

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Yes, you get different results if you run the model several times with the same settings. This is because even when you start with the same amount, the model may go through a different algorithm each time which gets you different results.

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The sheep population overtime started to increase from 100 to 318. This happened along with the wolves, they increased from 50 to 284. But, the sheep over time declined at about 80 ticks and about 95 ticks, the wolf population started to decrease as well.

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Was the outcome the same as your previous run of the simulation? Why?

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Was the outcome the same as your previous run of the simulation? Why?

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No, the outcome was not the same as my previous run of the simulation. This is because the number of sheep and wolves were much more different than the other mode. Since there was grass in the simulation, there was a more stable environment so the life cycle was also more stable.

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What happened to the wolves in this run? Why?

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What happened to the wolves in this run? Why?

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The wolves in this run were not able to reproduce as quickly as the sheep so there were less wolves than sheep. This is because the production rate of the sheep was two times higher than than wolves, so there were about 30,000 sheep and 1,000 wolves. Since the wolves were having a higher production rate, they were able to be more successful.

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At what settings would you find a balance between the three populations: grass, sheep and wolf? (A balance means that all three populations are in a relatively steady state without growing, or shrinking dramatically and without apparent threat of extinction).

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At what settings would you find a balance between the three populations: grass, sheep and wolf? (A balance means that all three populations are in a relatively steady state without growing, or shrinking dramatically and without apparent threat of extinction).

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There would have to be the model version of sheep-wolves-grass, and everything would have to be equal such as initial numbers, gain from food, and reproduction rates.

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Place a screenshot in the box below showing the settings and the plots with a		      balance of grass, sheep, and wolf populations. 

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Place a screenshot in the box below showing the settings and the plots with a		      balance of grass, sheep, and wolf populations. 

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How many tiles away is the (0,0) tile from the right side of the room? How many tiles away is the (0,0) tile from the left side of the room?

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How many tiles away is the (0,0) tile from the right side of the room? How many tiles away is the (0,0) tile from the left side of the room?

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The (0,0) tile is 3 tiles from the right side, and -3 tiles from the left side.

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Place a screenshot in the box below showing the code for to go.

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Place a screenshot in the box below showing the code for to go.

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In a few sentences explain what the model simulates and what you might do with  it.

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In a few sentences explain what the model simulates and what you might do with  it.

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The model is called the Earth Sciences - Fire model. The model simulates the spread of fire through a forest. It also shows how the spread of fire can vary based on the density of trees. With this model, you can vary the density of trees to see how far the fire spreads over a specific piece of land.

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Place a screenshot in the box below showing the model running for 100 ticks. 

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Place a screenshot in the box below showing the model running for 100 ticks. 

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Earth Sciences - Fire model after 100 ticks.