Question

In the 1900s, the leading causes of death were due to _____ .

bacteria or viruses

water pollution

environmental factors

all of the above

Answer 1

bacteria or viruses

Step-by-step explanation:

Answer 2

In the 1900s, the leading causes of death were due to bacteria or viruses. It might be said that infectious diseases lead cause of death in the world and in the US. It was after 1950´s that infectious diseases and death rates form these illnesses were reduced.