A new study suggests that the megalodon - the prehistoric shark - was more like a huge whale than a giant great white shark.

Some of the most notable examples of population changes occur in species that experience large ... circumstances, predator and prey populations can oscillate over time (Figure 3) in a manner ...

These organisms alter the environment through their behavior or their large ... Consider Figure 1. If the intermediate consumer or grazer elects not to forage in response to a top-predator ...