Compléter 90-testVersion en ligne 90-test par Farhad Key 1 waxy recouping leaves sugar me fall foliage do shed salvage The increasing darkness in the Northern Hemisphere this of year " indicates to the plant that is coming on . So it starts materials from the before they drop off . " Evergreens protect their needle ? like from freezing with coatings and natural " antifreezes . " But broadleaf plants , like maples , birches , and sumacs , have no such protections . As a result , they their leaves . But before they , the plants first try to important nutrients such as nitrogen and phosphorus .
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