Make quick decisions. <span />
Answer:
A. Interferons
Explanation:
According to Wikipedia, "Interferons are a group of signaling proteins made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses."
The answer is false because conserving water only saves water, it does not prevent water pollution
Saliva, blood, having Intercourse with some with HIV