Waterville: Modeling a Pond Ecosystem 12.17.18 CB REMIX

Engine speed: 5

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FPS

Create

create

minnow

create

algae

create day and night

create

algae

set initial count of organisms

set initial oxygen amount

draw the graphs

count the number of algae

count the number of minnow

count the number of bass

count the total number of organisms

clear oxygen line graph

when

pushed

clear organisms line graph

When an entire population of organisms die off stop running the model

run model for 5 years

when

pushed

when

pushed

while

toggled

when

pushed

when

pushed

I, minnow, reproduce

offspring when I have enough energy, food storage, and there is oxygen

I, algae, reproduce

offspring when I have enough energy, food storage, and there is oxygen

I, bass, reproduce

offspring when I have enough energy, food storage, and there is oxygen

if, I, minnow need more food storage then

I, minnow, seek algae

If a bass is nearby, then

I, minnow, retreat

I, minnow, swim only if I have enough energy

I, bass, seek minnow

If, I, bass need more food storage then

I, bass, swim only if I have enough energy

If I use all of my energy then

I die

To live, I, minnow, expend energy

To live, I, algae, expend energy

To live, I, bass, expend energy

on collision with

I, minnow, eat the algae I collided with

If it is day time, I, algae photosynthesize by

I, algae, diffuse carbon dioxide into my cell membrane

I, algae, convert sunlight into stored food

I, algae, diffuse oxygen out of my cell membrane

If, I, bass need more food storage then

on collision with

I, bass, eat the minnow I collided with

I, minnow, respire by

I, minnow, breath in oxygen

I, minnow, break down food storage for energy

I, minnow, exhale out carbon dioxide

I, algae, respire by

I, algae, diffuse oxygen in through my cell membrane

I, algae, break down food storage for energy

I, algae, diffuse carbon dioxide out through my cell membrane

I, bass, respires by

I, bass, breath in oxygen

I, bass, break down food storage for energy

I, bass, exhale carbon dioxide

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x Help

1. Use the left, right, up, and down arrow keys on the left to orient your model so that it is right-side-up and facing to the right.

2. Use the + and - keys to resize your model to what you want it to be at size one. The lattice cube of size 1 is there for reference. Note: Any part of your model sticking out of the cube will not be detected in collisions.

3. Use the up and down arrow keys on the right to adjust the position of your model at ground level, with the bottom of the lattice cube being the ground.

4. Use the "Flip Lighting" button to make sure that your model appears lit up before submitting.

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