Answer:
The existence of bacteria is what gives them their economic importance.
Explanation:
The pharmaceutical industry, just like any other industry, needs to make money. The more health problems, viruses, bacterias, fungus, parasites, infections, etc., the more solutions* the pharmaceutical can find/develop and sell.
Now, focusing on bacteria. Bacteria can cause many health problems such as pneumonia, food infection or salmonellosis. Some infections/deseases cause by some bacteria, can be deadly too.
*It is arguable that some of these "solutions" might not even work, having the sole purpose of making money.
Hope it helped,
BiologiaMagister
