BIO 121 Lecture Notes - Lecture 3: Crop Rotation, Scientific Control, Natural Selection
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Bio 121 week 2 lecture 3. Natural selection: certain superior variations that make individuals capable of surviving, cant reproduce if you can"t survive. Weak are outcompeted/weeded out: change appearance to adapt to environment. Insect pests on crops: pesticides, resistant genes transfer to offspring. Must change pesticides: if some traits can"t adapt back to environment, they might not evolve (and go extinct) Bio 121 week 2 lecture 4. Not a conscious, deliberate, or active process. Individual organisms do not evolve: populations evolve. During natural selection, the environment does the selecting rather than humans. A way of knowing; an approach to understanding the natural world. Two goals of science: describing nature and explaining nature. Scientists describe nature by making observations and taking measurements. Coming to a general conclusion based on many specific observations: inductive reasoning. Using the scientific method: observations, questions, hypotheses, predictions, tests. Specific predictions are based on general principles: deductive reasoning.
