Answer:
78.09% nitrogen
20.95%oxygen
0.03%carbon dioxide
0.93%other gases
this is the composition of air
it is essential for respiration
Explanation:
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Answer:
Whole grains contain all parts of the grain kernel. ... But refined grains, like the flour used to make white bread, have had the fiber-dense bran and the nutrient-rich germ processed out, leaving only the starchy endosperm.
Explanation: