The answer is B. The reason is because in an RNA strand, A turns into U.
The widespread, large scale, worlddwide burning of enormous quantities of fossil fuels for their energy, such as coal, oil, and natural gas, could do that, if it ever began and became popular.
Oh, wait ! That"s what we've been doing, for a couple of centuries now !
Answer:
Because igneous Rock is separated into different minerals. Radio carbon dating works by measuring the amount of carbon dioxide.
C. In the new six-kingdom system of classification, bacteria has separated into two kingdoms, archaebacteria and eubacteria.
