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materials put into the soil to provide the required nutrients essential to plant life and growth.
a law defining the relationship between pressure, volume, temperature and moles of a gas....
the stratosphere extends from a height of 10 km to 50 km above the surface of the Earth.
the amount of energy required to change the temperature of a substance.
a reaction that takes place automatically by itself, without requiring extra stimulation.
separate a solute, such as salt, from a solution, such as water.