Define aseptic. What does the prefix ‘a-‘ or ‘an-‘ mean?

opposite

Explanation:

The prefix “a-” almost always means that a word means the opposite of its base

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

no i don't feel that humans have oversubscribed some medications