The true firs, called true firs to distinguish the wood from Douglas-fir, consist of more than 40 species in North America, but only seven species produce commercial lumber. In eastern North America, ...
Fir trees need cooler, wetter climates to survive Droughts linked to climate change boost pest infestations Wooded mountain slopes have seen 30-40% decrease in snowcover KALAVRYTA, Greece, July 24 ...
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