A platypus is a mammal. Like other mammals, it feeds its young on mother's milk. It just so happens that it is a mammal which lays eggs. Therefore, it is a monotreme.
Both platypuses and echidnas are monotremes. The name monotreme is derived from two Greek words meaning "one-holed", because they have just one external opening, the cloaca, for both waste elimination and for reproduction. The cloaca leads to the urinary, faecal and reproductive tracks, all of which join internally, and it is the orifice by which the female monotreme lays her eggs.
Vasodilators
Aerophone
Neurologic
They fall under "Real Numbers"
Homo Sapien sapiens
Spiders fall under the Dewey Decimal Classification of 595.4.
It is an Aerophone Hope this helps
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Books on cricket or football would typically fall under the classification number GV for sports, while books on golf would fall under GV965. Books on running would be classified under GV1060.
No. Some gems fall under the classification of semi-precious stones.
The Dewey Decimal Classification for Smithsonian Maker Lab would likely fall under the 600s, which is the general classification for Technology.