Water stabilizes body temperature and dissolves many substances because
a. it evaporates easily.
b. its molecules are covalent.
c. its molecules are ionic.
d. it contains hydrogen bonds.
e. it is free of minerals
D
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You are studying reproduction in a species of frog. Two gametes that are diploid join to form a viable zygote (F1). If the F1 mates with one of the parents, will there be viable offspring?
A. yes B. no
Diphtheria is a contagious disease that spreads from person to person mainly by the fecal-oral route.
Answer the following statement true (T) or false (F)
Natural selection favors bacteria that express only the genes whose products are needed by the cell.
All of the chemical reactions that take place within your body are known as
A. organismal structure. B. metabolism. C. irritability. D. adaptation.