As you watch these videos, answer the questions that go along with each.

Directions: Answer the following questions in complete sentenceson a blank sheet of lined paper. Be prepared to show your work for credit and discuss your answers with your classmates.

Video 1 - Everybody

  1. What happened when wolves were reintroduced to Yellowstone Park (generally and specifically)?
  2. Explain the concept of "rewilding."
  3. Should "rewilding" be regulated by humans? Why or why not?

Video 2 - Everybody

  1. What is positive feedback? How is plant growth/death an example?
  2. Explain how negative feedback impacts a food chain over time.
  3. What type of feedback does "rewilding" create? Explain your answer.

Video 3 - Front Two Rows

  1. What is nitrate? Why is it important?
  2. How is nitrogen in the soil naturally replenished?
  3. Why can't plants use the nitrogen from air?
  4. Is the Haber Process good or bad for ecosystems? Explain your answer.

Video 4 - Back Two Rows

  1. Where does organic stuff in our bodies originally come from?
  2. How much plant matter is eaten while still alive?
  3. What is detritus? Why is it important in a food chain?