Darwin"s Inescapable Conclusion: fact: Overproduction and struggle for survival fact: Individual variation - unequal reproductive success (that"s...

Darwin"s Inescapable Conclusion: fact: Overproduction and struggle for survival fact: Individual variation -> unequal reproductive success (that"s what Darwin called "natural selection") 3.2 Cells: The Basic Units of Life The basic units of life: cells (confined by membranes) Life on Earth is carbon-based Carbon skeleton molecules: organic molecules Why carbon is important?