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 Article:
No Littering O-Zone: How Rising Ozone Levels Affect Tree GrowthThis article is from Issue Investi-gator (Northern Research Station) - Vol. 1 No. 1.
* Note: All editions of the Natural Inquirer starting with Volume 5 and including future editions require the newest version of Adobe Acrobat Reader 6.0 in order to be downloaded. We have upgraded in order to ensure greater accessibility to PDF files. Please click on the following link if you need to upgrade your Adobe Acrobat reader: Upgrade now to Adobe Reader 6.0. It is a free upgrade. In recent years, humans have been burning more and more fossil fuels. Fossil fuels are oil, natural gas, and coal. One of the extra products created by burning fossil fuels is ozone. Since the level of ozone is rising, the scientists wanted to know how this affects how trees grow. Tree growth starts in leaves. Therefore, scientists started by looking at the leaves. They looked at how many leaves were produced and the amount of nutrients in the leaves. Welcome to the Northern States edition of Investi-gator!Crossword PuzzleWord SearchesNote to EducatorsJournal Lesson PlanReflection Section Answer GuideEducation Standards Correlations
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