Answer :
Variation in individual streams results from c. climate, geology and soil, topography, and plant cover.
Environmental factors affect individual variation within a species because natural factors determine personal resilience in an ecosystem. If the individual variation does not match the environment, the individual will be selected so it cannot continue its descent.
One of the individual variations within a species can be influenced by environmental factors. Environmental factors will bring out visible properties (different phenotypes); for example climate, temperature, sunlight intensity, pH, wind, rainfall, and altitude. Variation is a characteristic that exists in one species from another and is different to distinguish it, while mutations are changes that occur in genes or chromosomes.
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