What is the single greatest threat to biodiversity?

Habitat loss

Explanation:

in fact it is the second largest threat to our existence on this planet next to Climate Change.

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.