nitrogen

Botany Science 3 of 3 appearances
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# Clue Answer As Given Value Round Category Air Date Show
(Sarah of the Clue Crew shows a tree in Alaska.)Aldersare the only commercial tree west of the Rockies that take part in the fixation of this gas, turning it into nutrients, so where alders grow, other species of plants can often follow nitrogen $1,000 J ALASKAN PLANT LIFE 2014-10-23 #6924
The 3 elements most commonly found in garden fertilizers are phosphorus, potassium & this element nitrogen $1,000 J PLANT PARENTHOOD 2003-10-22 #4398
Nodules on the roots of beans fix this element from the atmosphere nitrogen $400 J BOTANY 1991-06-26 #1588
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