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Foods high in magnesium (an example of a nutrient)
Foods high in magnesium (an example of a nutrient)
Grain products: rich sources of complex and simple carbohydrates
Grain products: rich sources of complex and simple carbohydrates
A manual water pump in China
A manual water pump in China
Colorful fruits and vegetables may be components of a healthy diet.
Colorful fruits and vegetables may be components of a healthy diet.
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This is a diagram depicting a large set of human metabolic pathways.[image reference needed]
This is a diagram depicting a large set of human metabolic pathways.[image reference needed]
Plant cells (bounded by purple walls) filled with chloroplasts (green), which are the site of photosynthesis
Plant cells (bounded by purple walls) filled with chloroplasts (green), which are the site of photosynthesis
Santorio Santorio in his steelyard balance, from Ars de statica medicina, first published 1614
Santorio Santorio in his steelyard balance, from Ars de statica medicina, first published 1614