Marine food webs are highly complex. Until now, researchers have been unable to understand exactly how they are affected by ...

Prey also have adaptations which enable it to escape, such as good eyesight. A predator-prey graph shows the numbers of predators and prey in an ecosystem over time. More predators will kill more ...

(Photo by Whitney Cranshaw, Colorado State University, Bugwood.org. CC by 3.0) Written answers, codes and graphs. Depending on the course goals, instructors may wish to encourage students to modify ...