On what characteristic of an organism does natural selection exert pressure? a. allele frequency b. gene pool c. genotype d. phenotype

Liquid water turns into water vapor at which step in the water cycle

What occurs to the cell during mitosis

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters