The answer is basically D
A protein coat, and some DNA or RNA that isn't normal for a typical human cell.
Answer:
The method of determining population size is the population not aware of the sampler’s presence is indirect observation.
D
The best and most correct answer among the choices provided by your question is the third choice.
Re-circulate water in large-scale fish tanks is the strategy would most likely improve water conservation at a fish farm.
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