Northern pike (it’s a fish) feed on another fish, the yellow perch. An increase in the yellow perch population causes an increase in the northern pike population. Density- Dependent The BP oil spill in the Gulf of Mexico has harmed many aquatic organisms that live in the Gulf region. Density- Independent
- Read each situation in the chart below. Then, state if it is a density-independent limiting factor or a density-dependent limiting factor. Then, state the specific limiting factor that is occurring. The first one is done for you as an example.
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SITUATION |
Dependent - Independent or Density-Dependent |
Limiting Factor |
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Mrs. Engelbrecht has 32 students assigned to her Biology Class, but she only has room for 28. Because the room is crowded, the extra 4 students leave room to go to Guidance and have their schedules changed. |
Density- Dependent |
Emigration |
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Northern pike (it’s a fish) feed on another fish, the yellow perch. An increase in the yellow perch population causes an increase in the northern pike population. |
Density- Dependent |
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The BP oil spill in the Gulf of Mexico has harmed many aquatic organisms that live in the Gulf region. |
Density- Independent |
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A new strain of influenza (the flu) breaks out in New York City |
Density- Dependent |
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A population of rabbits and a population of deer are both feeding off the same plants in the same habitat. |
Density- Dependent |
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Hurricane Katrina forced thousands of people to leave New Orleans |
Density- Independent |
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65 million years ago, a large asteroid collided with the Earth. As a result, large amounts of ash were ejected into Earth’s atmosphere |
Density- Independent |
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