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The life cycle of vertebrates starts with the production of the reproductive cells of an...
Moles are small subterranean mammals with modified, spade-like forelegs.
The animation shows the anatomy of turtles.
Curious little animal living in underground burrows in the African savannahs.
Predators on top of the food chain prey on other animals. Their relationship is hunter and hunted.
Honeybees produce a sweet and nutritious substance, honey.
A video about the mammals living in the cold climate zones of the Earth, like the polar bear,...
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.