Multiple choice

East coast of North America and the sea around Japan have rich fishing grounds because of

  1. a cold current flowing along the coast

  2. indented coastal area

  3. a warm current along the coast

  4. meeting of warm and cold currents
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rich fishing grounds form where warm and cold ocean currents meet because this convergence creates ideal conditions for marine life. The mixing of waters brings up nutrients from the ocean floor, supporting phytoplankton growth which attracts fish. The Grand Banks (North America) and waters around Japan both have this phenomenon where currents like the Gulf Stream (warm) meet the Labrador Current (cold). Options A, B, and C are incorrect because single currents or coastal indentations alone don't create the same nutrient-rich conditions.

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