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A patient's initial plasma hCG level is 2250 IU/L, but 48 hours later it is 3375 IU/L, and another 48 hours later it is 4500 IU/L.These data provide laboratory evidence of which type of pregnancy?
Organic Matter
Material derived from the decay of plants and animals that provides nutrients for plants and increases soil fertility.
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.
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