Classification of mammals
Characterize the mammals in accordance with the examples of representing beings, skin, basic morphology, respiration, circulation, nitrogen waste, thermal control and types of reproduction?
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a) Examples of representing beings: dogs, cats, horses, giraffes, elephants, apes, humans, bats, whales, dolphins, opossums, kangaroos, platypus.
b) Basic morphology: hair, diaphragm muscle, mammary glands, enucleated red blood cells.
c) Skin: impermeable, hairy.
d) Respiration: pulmonary.
e) Circulation: closed and complete, heart with four chambers.
f) Nitrogen waste: urea.
g) Thermal control: homeothermic.
h) Types of reproduction: sexual, internal fecundation, oviparous monotremes (prototherians), marsupials (metatherians), placental (eutherians).
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