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Chameleons are reptiles with an ability to change their colors.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
The animation shows the anatomy of turtles.
A type of snake with a characteristic spot on its neck.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
This animation demonstrates the anatomy of amphibians through the example of a common species of frogs.
Large carnivores, perhaps the best known of dinosaurs.
Long-necked herbivorous dinosaur with a robust body.
A type of herbivorous dinosaur easily recognizable by its large frill and three horns which lived in the Cretaceous period.
Hydrogen atoms within hydrogen molecules are held together by a covalent bond.
This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.