Complete the sentence about Lake Burtnieks with the correct year: After the regulation of the Salaca river in ______, the lake level dropped by a metre, and many of the exposed shallows grew covered with reeds and algae.

Answer and explanation

Correct answer: D. 1929

  1. Step 1: After the regulation of the Salaca river in 1929, the lake level dropped by a metre, and many of the exposed shallows grew covered with reeds and algae. Answer: 1929. Why not the others: 1949, 1944 and 1939 don't fit.

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