Gardener with basket of egg shells spreading crushed shells around tomato plant - VH-studio/Shutterstock A quality eggshell contains about 2.2 grams of calcium carbonate, the compound that gives them ...
Eggs are kitchen gold — fast protein, simple breakfasts, and a staple in homes everywhere. But the problem is that no one really knows what to do with their shells. Most folks just toss them out ...
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