Answer:
Why are metals useful:
Metals are very useful materials. Metals have many properties, such as strength, toughness, and stiffness. When heated, metals can be shaped into anything from a tiny paperclip to a huge aircraft. They are also good conductors of electricity and heat, which makes them useful for electrics and cooking pans.
What are some of their uses:
As metals are good conductors of electricity, they are used to making wires and parts for equipment and gadgets that function on electrical current.
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Parasympathetic nervous
Parasympathetic nervous
system is known to be one of the two divisions of the autonomic nervous system
and it is responsible for the stimulation of rest and digest activities that
usually occur when the body is at rest after eating which includes salivation,
urination, sexual arousal and digestion.
Answer:
Feathers.
High metabolism.
A four-chambered heart.
A beak with no teeth.
A lightweight but strong skeleton.
Production of hard-shelled eggs.