Explain how genetic drift and natural selection are different.

Both natural selection and genetic drift are mechanisms for evolution (they both change allele frequencies over time). The key distinction is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success.
If the frequencies of traits in a population change purely by chance , then genetic drift has occurred. This may happen when a random subset of a population dies (i.e., from a natural disaster or from indiscriminate human hunting). The remaining individuals are left to pass their traits to later generations, but the population has changed, so evolution has occurred.
Natural selection is the process by which the most adaptive traits for an environment become more common generation after generation. It is not a random process. However, it also is not a purposeful process. If a trait enhances an organism's ability to reproduce, then that trait will be more likely to pass to the next generation compared to a trait that does not enhance reproductive success. Natural selection is the process by which these adaptive traits become more common in a population.

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )