EagleTribune.com, North Andover, MA



Graphic explains how and why tree leaves change color in the fall; the effects of the drought may be seen in this year's fall foliage because the lack of water makes it harder for the leaves to produce carbohydrates, which are used in the growth process. Chicago Tribune 2012<p> With HOME-ENV-DROUGHT-LEAVES:TB, Chicago Tribune by Bridget Doyle<p> 06000000; 08000000; 10000000; 17000000; ENV; HUM; krtcampus campus; krtenvironment environment; krtfeatures features; krthumaninterest human interest; krtlifestyle lifestyle; krtnational national; krtweather weather; krtworld world; leisure; LIF; WEA; krt; mctgraphic; 06007000; 06011000; 17002000; environmental issue; global change; global warming; krtnature nature; 13004004; botany; krtscience science; krtscitech; natural science; SCI; 03001000; 03015001; DIS; krtdisaster disaster; krtdrought drought; carbohydrate; chlorophyll; color; doyle; fall; green; leaf; leaves; nieland; plant; season; temperature; tree; tb contributed; 2012; krt2012

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