Unsolved problems in biology

Unsolved problems in biology
Some unsolved problems in biology include: ...

Some unsolved problems in biology include:
Life. How did it start? Is life a cosmic phenomenon? Are the conditions necessary for the origin of life narrow or broad?

Medicine (Physician) - Physical anthropology
Outstanding problems
Origin of life - Unsolved problems in biology
Other
List of technologies - List of conservation topics
Biomedical topics
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See also: Organ, Animals, Biology, Animal, Protein