Which factor within a population could be studied to determine whether the population is evolving?

a. allele frequency
b. number of individuals
c. reproduction method
d. age of individuals

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery