Photovoltaics perform what type of energy transformation?

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

According to the sector model, in which region or regions would you most likely find industrial and transportation development?

What do we think became of the big bang?