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Hipervinculo Biología

Decaying Food

What makes food decay faster?Possible Hypotheses: Heat does/does not make food decay faster. Light does/does not make food decay faster. Water does/does not make food decay faster.It is an educational ...

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Equipo Didactalia

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Hipervinculo Ciencias de la Tierra y Medioambiente

Recycled or New

Does recycled paper break down faster than new paper? Dig a hole about two inches deep and large enough to lay the pieces of paper side by side. Place the pieces in the hole and bury them with the sam ...

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Hipervinculo Ciencias de la Tierra y Medioambiente

Soil Horizon

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?How deep do you need to go to find the place w ...