Question predators are animals that hunt other

This preview shows page 2 - 4 out of 5 pages.

Question: Predators are animals that hunt other animals, called prey. How do predator and prey populations affect one another? 1. Observe : Run the Gizmo with several different starting conditions. You can use the + or buttons to add or remove organisms, or you can choose Diseased from the dropdown lists. 2. Form hypothesis : How do you think predator and prey populations affect one another? They both depend on each other. They both keep the ecosystem balanced. But if one organism is taken out of the whole ecosystem the whole ecosystem would be destroyed. _________________________________________________________________________ _________________________________________________________________________ 3. Predict : Based on your hypothesis, predict how changing the rabbit population will affect the other organisms at first. Write “Increase” or “Decrease” next to each “Prediction” in the table.
Image of page 2

Subscribe to view the full document.

Change Grass Snakes Hawks Doubling rabbit population Prediction: Decrease Result: Decrease Prediction: Increase Result: Increase Prediction: Increase Result: Increase Halving rabbit population Prediction: Increase Result: Increase Prediction: Decrease Result: Decrease Prediction: Decrease Result: Decrease 4. Test : Add rabbits until the population is about twice as large as it was (200% of balance). Click Play , and then Pause ( ) after approximately ONE month. Next to each “Result” line in the table, write “Increase” or “Decrease.” Click Reset and then halve the rabbit population (50% of balance). Record the results for this experiment in the table as well. A. How did doubling the rabbit population affect the grass, snakes, and hawks at first? The grass population decreased because there was too many rabbits and not enough grass. The rest of the organisms increased in population because there was more things for them to eat.
Image of page 3
Image of page 4
  • Fall '15
  • Darr
  • Rabbit, hawks

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern