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YDS PARAGRAF DOLDURMA / TEST 3 23. Soru

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23.

Copper has been known since prehistoric times.
It is an excellent conductor of heat and
electricity, and is used extensively in roofing,
utensils and electrical wiring. ........ . For
example, it is required for the formation of
chlorophyll in plants, and traces of it are
necessary in the human diet to aid in the
breakdown of sugar. However, too much copper
in the diet can cause cirrhosis of the liver, failure
to grow and jaundice.

Leafy greens and red meat are two excellent
sources of copper

Copper combines with tin to make bronze, a
metal harder than either

In the late 18th century, copper began to be
used to cover the bottoms of ships

Copper is also necessary for the well-being of
all living things

Copper is abundant enough not to be
particularly expensive