D since the next step in the scientific process would be to experiment
The answer to this is C. Industry. It's the only man made factor.
Answer:
The phenotype may change constantly throughout the life of an individual because of environmental changes and the physiological and morphological changes associated with aging. Three types of natural selection, showing the effects of each on the distribution of phenotypes within a population.
models can be very useful in helping to visualize something or observe how something functions. It can help develop a deeper understanding of a subject or help with making predictions based off that model.
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