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Marijuana contains compounds that are psychoactive.
Topsoil
The uppermost layer of soil, rich in organic matter and nutrients, critical for plant growth and agriculture.
A Soil Horizon
A Soil Horizon is a distinct layer parallel to the soil surface, differing from adjacent soil layers in physical, chemical, and biological properties, composition, or color.
Common Name
A name that is commonly used by the general public to identify a species, as opposed to its scientific name.
Hydrologic Cycle
The continuous movement of water on, above, and below the surface of the Earth, involving processes such as evaporation, condensation, precipitation, and infiltration.
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