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Name: Tay
Status: student
Grade: 6-8
Location: Outside U.S.
Country: USA
Date: Spring 2014

Flowers of the hydrangea plant are blue when the soil is acidic. They are pink in basic soil. Which elements are usually associated with the pH differences in soils?
More neutral (higher pH) soils often have more calcium (Ca) since these soils are often associated with limestone areas. The following may be helpful:

Anthony Brach

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