What profoundly transformed entertainment education commerce and research in the united states?

The process of rocks breaking down and becoming other rocks

According to this map, which of these statements about cuban economic activity is true? a) coffee is not a valuable commodity in cuba. b) cattle ranching is found only in the western half of cuba. c) tobacco is grown in most areas of the country. d) manufacturing is limited to mostly the southern coast.

It has been reported that the dna of the elephant shark has barely changed over the last 420 million years. which statement explains why the elephant shark has not changed over time?