Which factor most determines how fast a high and low air mass will move towards one another? a. humidity b. distance c. temperature d. relative humidity

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Along what geographical feature are most of the oil producing regions located