Multiple choice general knowledge science & technology

In urban areas, floods often become more frequent because:

  1. extensive pavement limits infiltration to soils

  2. extensive pavement increases runoff to streams

  3. storm sewers conduct runoff more efficiently to streams

  4. all of these contribute to increase flooding in urban areas
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Urbanization increases flooding through multiple mechanisms: pavement prevents infiltration (A), increases runoff (B), and storm sewers deliver water faster to streams (C). All these factors combine to make urban floods more frequent and severe.

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