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What mental illness is often improved by drugs that block serotonin re-uptake?
Species Richness
The number of species in a community.
Tropical Rain Forest
A lush, species-rich forest biome that occurs in tropical areas where the climate is very moist throughout the year. Tropical rain forests are also characterized by old, infertile soils.
Unit Area
A specific measurement used to describe the quantity of an object or substance within a defined area of space.
Keystone Species
A species whose presence in an ecosystem largely determines the species composition and functioning of that ecosystem.
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Q160: Proper growth requires which of these hormones?<br>A)thyroid