A membrane bound nucleus (or just a nucleus in general)
It must be widespread, limited in geological time, and distinctive.
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Yes, chameleons can eat grasshoppers and they do
The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs. ... The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs.
Starvation.
Disease.
Weather.
Lack of mate.
Offspring dying.
Hunting.<span />
