The bulk of facebook's revenue comes from: advertising
Explanation:
The evidence that supports the conservation law is that Carbon dioxide becomes glucose and oxygen during photosynthesis. The law of conservation of mass states that in a chemical reaction, mass is neither created nor destroyed.
<span>E. chemical complexes of RNA or DNA protected by protein shell
https://quizlet.com/9713220/chapter-20-viruses-bacteria-and-archaea-flash-cards/
</span>
I believe it is D) heliocentric !
And reproductive isolation