Use of English · Część 2
Solar energy (0) IS derived ultimately from the sun. It can be divided (1) .......... direct and indirect categories. Most energy sources on Earth are forms of indirect solar energy, (2) .......... we usually don't think of them in that way. Coal, oil and natural gas derived from ancient biological material…
Odblokuj wszystkie egzaminy, nielimitowane symulacje, wszystkie 80 etapów gry i nie tylko.