Scientists have discovered and identified only a fraction of the species living and extinct. True or False?

Science

This is true because humans can only know so much due to unexplored lands, water depth, and evidence of extinction being hidden.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's