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


Question:
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?
Replies:
More neutral (higher pH) soils often have more calcium (Ca) since these soils are often associated with limestone areas. The following may be helpful: http://en.wikipedia.org/wiki/Soil_pH

Anthony Brach



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