Three key indicators tell a demographic story of our world. Compare the data recorded in 1970 and 2013. All but one factor is a reason for the decline in infant mortality. That factor is

A)better health care
B)improved sanitation
C)higher fertility rate
D) a more educated population

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.

the circumference of the solar disc is 4375246 km, nearly.

explanation: