Which best describes the elements that comprise most of earth’s crust?
a.
a chemi...
Biology, 14.01.2020 22:31 ciarrap552
Which best describes the elements that comprise most of earth’s crust?
a.
a chemical combination of a few elements
b.
a single element, such as sulfur or gold
c.
a mixture of metals and nonmetals
d.
a chemical combination of about 100 elements
Answers: 1
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The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body
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Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive
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