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← GeographyWhich mechanism causes the formation of large pluvial lakes during glacial periods?
A)Isostatic rebound increasing basin depth
B)Increased precipitation, reduced evaporation amplify runoff✓
C)Tectonic uplift altering watershed topology
D)Seawater intrusion depressing land elevation
💡 Explanation
When glacial periods cause climate shifts toward cooler temperatures, increased precipitation and meltwater runoff coupled with reduced evaporation lead to significant increase in lake water volume because of intensified hydro cycle. Therefore, increased available water results,rather than uplift,down-warping or intrusion shifts which require different mechanisms.
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