Classification system originated in the 18th century, from the works of a Swedish botanist Carolus Linnaeus. He classified living beings based on similarities between them. Organisms which could interbreed were put in one species.
The second image went through permineralization
True, if we are talking about Green forests. Through The photosynthesis, the trees uses Carbon dioxide to produce Oxygen, based on the reaction:
6CO2 + 6H20 --> C6H12O6 + 6O2
Hope this Helps! :)
Active transport driven directly or indirectly by metabolic energy