Populations Practice 1. Read each situation and 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. Situation Density independent, Limiting Factor or density dependent? Mr. Novak has 32 students assigned to his Biology density-dependent emigration class, but only has room for 28. Because the room is so crowded, the extra 4 students leave the room to go to Guidance and have their schedules changed. Northern pike feed on another fish, the yellow perch. An increase in the yellow perch population causes an increase in the northern pike population. The BP oil spill in the Gulf of Mexico has harmed many aquatic organisms that live in the Gulf region A new strain of influenza (the flu) breaks out in New York City. A population of rabbits and a population of deer are both feeding off the same plants in the same habitat. Hurricane Katrina forced thousands of people to leave New Orleans. 65 million years ago, a large asteroid collided with the Earth. As a result, large amounts of ash were ejected into Earth’s atmosphere. Due to humans putting increasing amount of greenhouse gases into the atmosphere and cutting down trees that would normally take up some of those gases, the Earth slowly gets warmer and changes climates around the globe.
Populations Practice 1. Read each situation and 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. Situation Density independent, or density dependent? Limiting Factor Mr. Novak has 32 students assigned to his Biology class, but only has room for 28. Because the room is so crowded, the extra 4 students leave the room to go to Guidance and have their schedules changed. density-dependent emigration Northern pike feed on another fish, the yellow perch. An increase in the yellow perch population causes an increase in the northern pike population. The BP oil spill in the Gulf of Mexico has harmed many aquatic organisms that live in the Gulf region A new strain of influenza (the flu) breaks out in New York City. A population of rabbits and a population of deer are both feeding off the same plants in the same habitat. Hurricane Katrina forced thousands of people to leave New Orleans. 65 million years ago, a large asteroid collided with the Earth. As a result, large amounts of ash were ejected into Earth’s atmosphere. Due to humans putting increasing amount of greenhouse gases into the atmosphere and cutting down trees that would normally take up some of those gases, the Earth slowly gets warmer and changes climates around the globe.