1. What is the “Precautionary principle?” Discuss with an example. [2+3=5]

2. Describe how evolution can affect predator-prey relationships. Provide two specific examples of predator-prey relationships and explain the corresponding interactions between the predator and prey populations . [2+1.5+1.5=5]

3. Population density may or may not affect how rapidly it can grow. Explain this statement by giving two examples, one involving a density-dependent factor, and the other involving a density-independent factor. [2.5×2=5]

4. How has human population generally been able to avoid environmental resistance factors? Is this likely to continue in the future? Why or why not? [3+2=5]

5.Define invasive species. Give two examples of invasive species that have become commonplace in Manitoba’s landscape. Indicate where they came from and where they are found. [2+3=5] (do online research if needed