Individuals in a species show a range of ____ caused by a variety of alleles formed by ____ * When organisms ____, they produce more offspring than the environment is able to support (____ of offspring). This leads to ____ for food and other resources which results in a ‘____’ due to the selection ____. * Individuals with characteristics most suited to the environment have a higher chance of ____ and more chances to reproduce. Therefore, the ____ resulting in these characteristics are passed to their ____ at a higher rate than those with characteristics less suited to survival * This means that in the next generation, there will be a greater number of individuals with the ____ variations in characteristics - this is ____. This process is repeated over many ____.

Natural selection

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