4 Written Questions
4 Multiple Choice Questions
- Occurs after a disturbance in an already existing ecosystem. First species to appear are weeds/grasses.
- A food web has multiple (many) paths in which energy flows in an ecosystem. The arrow points in the direction energy goes!
- Driven by the sun. Changes from liquid to gas to liquid again.
- Free nitrogen can not be used so it has to become fixed. Bacteria perfoms this function.
3 True/False Questions
Scavenger → Eats animals that are already dead.
Primary Succession → Occurs where no previous ecosystem existed. First species to appear are lichens and mosses.
Hypothesis statement → Survives by stealing energy off another animal