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817

Centuries: 8th century - 9th century - 10th century

Decades: 760s 770s 780s 790s 800s - 810s - 820s 830s 840s 850s 860s

Years: 812 813 814 815 816 - 817 - 818 819 820 821 822


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Photosynthesis

... a waste product that is released into the environment. In green plants and algae, the pigment molecules that initially absorb the light energy are chlorophyll and various ...

 
 
 
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