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This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..
This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..