1. • Overproduction:More offspring are produced by an organism than
can possibly survive, only the best adapted will survive.(usually)
• Competition: High birth rates cause a shortage of life’s necessities,
leading to competition between organisms. (food, reproductive rights,
habitat)
• Variation: Each individual differs from all other members of its
species; some differ more than others. (Genetically speaking)
• Adaptation: Variations help some organisms to be better suited to
their environments than others. These Adaptations usually occur
naturally as mutations during reproduction.
• Natural selection: The “most fit” (best adapted) organisms survive
and reproduce. While unfit organisms die off without reproducing.
• Speciation: New species form from ancestral species by means of
natural selection.