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Commensalism refers to the relationship wherein one organism is benefitted while other remains unaffected.
D. ; Eukaryotic cells are bigger, younger, and more complex
A) recessive alleles are only expressed when the offspring is homogenous recessive for the trait (as in, both inherited alleles are recessive)
Answer:
True
Explanation:
Sewage contains many substances in it like suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease causing bacteria and other microbes. Hence it is said to be a complex mixture.
