questionedithistorytranslationsCurrent version This is the accepted version. added by globalquiz.org Aug. 30, 2012, 10:29 p.m. What is a trigger for opening a sequoia cone? frostfirefloodearthquakeYoung sequoias are able to grow successfully only in mineral soils in full sunlight, free from competing vegetation. They therefore require periodic wildfire to clear the area. Due to very thick bark, the fire doesn't harm sequoia.globalquiz.orgShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this question0Very interesting!reach: rather globalbiologybotanyconesnaturesequoiatreesVotes Acceptable globalquiz.org