_________ form when water collects in hollows and low lying areas.

• A. Ponds and lakes
• B. Wetlands
• C. Rivers
• D. Tributaries

Answer: (A)

Water pools in hollows and low spots because these depressions trap water that can’t drain away quickly. When rainfall and runoff collect there and stay for a while, a standing body of water forms. If the basin is small and shallow, it becomes a pond; if it’s larger and deeper, it becomes a lake. This describes the accumulation of water in landscape depressions. Wetlands are areas saturated with water that support particular vegetation and wildlife and can include standing water, but they emphasize habitat and soil conditions rather than just the presence of a pool. Rivers and tributaries involve flowing water in channels, not still pools.