How has the human population influenced this food chain? a) it has increased the prairie dog population by killing off the predators. b) it has reduced the prairie dog population because they are pests to humans. c) it has reduced all three levels by reducing the amount of prairie land available. d) it has increased the amount of prairie land and also the amount of prairie dogs.

The complete question is attached below:

Option C

Explanation:

The land that is available for the growth of the producers is reduced. If the first level of the food chain is affected then the other levels of the food chain will also be affected.

Then primary consumers will be less due to less producers. The secondary consumers will also be reduced.

The different levels above these levels will also be affected due to the less availability of food from the lower tropic level.

So, the all the levels will be affected if the prairie land will be reduced.

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.