cacao trees
cacao trees
The primary source of caffeine is the coffee bean. The plant makes the poison to keep things from eating its seeds. If you were to make a straight diet of coffee beans you would die of heart failure.
It is a primary source.
Coffee, tea.
A picture can indeed be a primary source.
it is a primary source
It has half the amount of caffeine that coffee has
It is a primary source because it was taken at the time.
yes,a coin is a primary source
Primary
The primary source is Urea
Primary Source