Answer:The genetic code is based upon the reading of how many bases at a time? A. one. B. two. C. three. D. four.
Cystic fibrosis (CF) affects both males and females and people from
all racial and ethnic groups. However, the disease is most common among
Caucasians of Northern European descent.
CF also is common among Latinos and American Indians, especially the
Pueblo and Zuni. The disease is less common among African Americans and
Asian Americans.
Answer:
c
Explanation:
the mantle is the layer where there are materials are melted
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