The answer is concentration gradient. Have a good day.
Explanation:
The out come that mendel's observed from dihybrid crosses confirmed that each trait could be described by a pair of factors that segregated to form progeny (his first law) and further suggested that factors for multiple traits segregated independently, thus forming the basis for mendel's second law of inheritance
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An environmental scientist might study the effect of soil pollution on plant growth. This is true.
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