Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
That disease is caused by the HIV(HUMAN IMMUNO DEFICIENCY VIRUS )
The smallest particle of any type of matter would be an Atom
Evaporation will probably be the next step. The water cycle consists of a few steps. Most of which you should know. But yeah evaporation would most likely be next.
Course alteration is the first to be utilized to find the example, and just with the low power objective. When seeing an example, you should dependably utilize the lower control target focal points first. Low power focal point gives the most stretched out field of view and makes it less demanding to discover the example when you look through the magnifying lens. Finding the example at high power, without first focusing it in the field of view at low power, is almost outlandish.