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Animals

Contributors in Animals

Animals

Extinct

Animals; Animals

When the entire species has disappeared from Earth.

Embryo

Animals; Animals

A young animal in the first stages of development.

Sessile

Animals; Animals

A sessile animal attaches itself to another object and cannot move independently.

Respiratory system

Animals; Animals

All animals have a respiratory system which allows the animal to take in oxygen from the environment (breath in) that the animals blood needs to stay healthy. The process of respiration produces ...

Placenta

Animals; Animals

An organ that is produced by a developing animal that allows it to absorb nutrients from the mother's bloodstream when it is in the womb.

Plankton

Animals; Animals

Floating microscopic organisms that drift close to the surface of the sea in open water.

Polygamous

Animals; Animals

When male animals often made with several female animals throughout the breeding season.

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