1. Evolution by natural selection
Evolution by natural selection is an ongoing process that has been shown in numerous examples including the evolution of pesticide resistant insects. Since pesticides were introduced around the same time as World War II, ... has been to apply higher levels of insecticide to their crops. This results in a large burden on the environment where the chemicals can endanger human health and natural ecosystems. This insect resistance evolves quickly because natural selection increases the rare mutations that are not advantageous under normal conditions, but happen to provide protection against har...
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- Approx Pages: 1
- Grade Level: Undergraduate