Answer:
A.) a substance with ph between 0 and 7.
Explanation:
as acid has pH value between 0 to 7.
An entomologist is a zoolist interested in insects. The are interested in finding and studying the classification of the life cycle, insects environments, how they relate to humans and their organisims
Antibiotics are drugs that are able to fight diseases caused by bacteria. Besides, it is a "golden solution" that can kill harmful bacteria (pathogenic bacteria such as fungi, actinomycetes, ...), has the effect of inhibiting the growth and spread of of these bacteria.
Natural Selection.
It favors the better adapted organisms.