Freshwater crocodile the same weight. This allows them to live for a half a year without eating. After the food goes down the throat, it is met in the gizzard by sand and rocks -these elements help break apart the bones, horns, hooves, hide, and flesh. This more broken-down material then enters the hydrochloric acid of the stomach. The hearts of other reptiles are designed to contain three sections including two atriums and ventricle. The right atrium, which collects the returned de-oxygenated blood and the left atrium which collects the oxygenated blood collected from pulmonary arteries of the lung, takes the blood
Fishing down the food web Ecopath model. Ecopath is a computerised ecosystem modelling system. The functioning of an ecosystem can be described using path analysis to track the direction and influence of the many factors controlling the ecosystem. The original Ecopath model was applied to a coral reef food web. Scientists tracked tiger sharks at the top of the food web and collected data on their feeding behaviour, what they ate and how much. Likewise, they collected feeding data on the other organisms in the food chains down to the primary producers, such as algae. This data was fed into an Ecopath model, which then