in the following pie chart, which of the following represents the amount of earth's surface water that is not located in the oceans

a) a only
b) a and b
c) a, b, and c
d) d only

How can you tell the difference between rough er from smooth er?

Nucleic acids offer variability because they contain alternate forms of genes called .

Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a.changes in genetics in human populationsb.antibiotic resistance in bacteria populationsc.pesticide resistance in garden insectsd.changes in the color of the peppered moth population in england