Question

which development in human history first made waste disposal a problem? a. increase in agriculture b. new diseases c. growth of cities d. decrease in birth rate

Explanation:

As human populations concentrated in cities, waste (human, food, and industrial) accumulated in dense areas at a scale that could no longer be managed by simple, small-scale methods, creating the first widespread waste disposal challenges. Agricultural increases supported population growth but did not directly create the waste problem; new diseases are a consequence of poor waste handling, not the cause of the problem; a decreased birth rate would reduce waste, not create a problem.

Answer:

C. growth of cities