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In randomized controlled trials, the experimental group is compared to a comparison group who receives _______.
Atmospheric Carbon Dioxide
The concentration of CO2 in the Earth's atmosphere, a significant greenhouse gas contributing to global warming.
Adaptive Radiation
An evolutionary lineage that has undergone exceptionally rapid diversification into a variety of lifestyles or ecological niches.
Ecological Niches
Specific positions or roles played by organisms within their environment, considering how they obtain their energy and nutrients, and interact with other organisms.
Clades
Clades are groups of organisms that are classified together based on sharing a common ancestor, thereby forming a branch on the tree of life.
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