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Yes, they can produce specific pitches.
Mammals have three special characteristics that separate them from other groups of animals. The females produce milk by mammary glands, they have hair, and they have 3 specific middle ear bones. All of these characteristics are true of elephants, thus they are mammals (in the Order Proboscidea).
the two characteristics of land are slopes and mountains.
Two characteristics that define gymnosperms are that they do not produce flowers or fruits and do not pollinate
There are not any species,varieties or cultivars of edible cherry (Prunus sp.) that grow seedless. If someone did develop a genetically viable seedless cherry with the ability to produce on a commercial scale, they would probably be doing it already.Source: Me (I am a certified horticulturalist).
Male platypuses can produce venom.
A plasmid is a circular double stranded DNA usually found in bacteria. Most of them do not have specific functions and altering them does not hamper the bacteria possesing them. A gene of interest can be annealed to this plasmid so as to make the concerned bacteria produce a particular product. Since the bacteria can now produce a new product, the plasmid has been used to alter the characteristics of the organism.
Quantity supplied is the amount that firms will produce and sell at a specific price.
because of its color
Easy to maintain, powerful, inaccurate, cheap to produce.
slopes and mountions
You can produce sperm in your semen once puberty has begun. Before puberty begins you will not be able to produce semen. The testes will produce the sperm when the secondary sexual characteristics are ready.