The complexity of life, combined with our limited knowledge: O is overcome by the science of taxonomy
O is circumvented by objective analysis
O sometimes prevents conclusive classification
O always prevents classification

The complexity of life, combined with our limited knowledge sometimes prevents conclusive classification.

Explanation:

Hope this helped c;

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.

the answer is cell division : )