Which of the following is not a class of cellular rna? a. trna b. mrna c. snorna d. snrna e. pirna f. dirna g. crrna h. mirna i. sirna

i think it's they require warm air

explanation:

tornados usually happen when it's raining right so when it's raining it cools down so if the temperature keeps changing then i think a tornado occurs sorry if it's wrong

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.