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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Fertile earth:

LOESS: Fertile earth that covers about 10% of the Earth's land
SILT: Fertile earth.
LOESS: Fertile earth.
LOAM: Fertile earth
TOPSOIL: Upper layer of fertile earth
MARL: Fertile earth