Can someone help me please?

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

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .