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Below are the previews for the slide in Biology 6 - Life on Earth. If you click on them, you can see larger versions. If you are on a computer you can press the left and right arrows to move. You can also click the arrows to the left and right of the screen.

Powerpoint Description:

This PowerPoint covers: mutations in DNA, beneficial mutations, evolution and the work of Darwin and Wallace, natural selection and how it explains evolution, speciation, geographic isolation, selective breeding, evidence for evolution (including fossils, stone tools and the pentadactyl limb), how Darwin's work was controversial, sexual vs asexual reproduction, the advantages and disadvantages of each form of reproduction, classification and how we classify organisms, common ancestors, the evolution tree, using DNA to classify organisms, biodiversity, problems humans have caused such as deforestation and global warming, pollution indicator species, global population changes and how they affect food security, ways to increase food security, methods of maintaining biodiversity.

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