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Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Earth as viewed from Lunar orbit during the Apollo 8 mission, Christmas Eve, 1968. Africa is at the
Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus
The asymmetry of facial expressions. Notice that the expressions are more obvious on the left side ...
Checkpoints and proliferation decision points monitor the progress of the cell through the cell cycl
Section of a normal brain (left) and an HD brain (right). The HD brain shows extensive damage to the