Examlex
As the LD₅₀ of a substance decreases,the toxicity of the substance ________.
Splitters
Refers to scientists, especially taxonomists, who prefer to classify organisms into many fine categories based on small differences.
Naming Species
The process of systematically identifying and classifying organisms into groups based on shared characteristics, following a standard set of rules.
Lumping
The practice in taxonomy of grouping together several previously separate species into one broader category.
Obsidian
A naturally occurring volcanic glass, used by ancient people for making sharp tools and ornaments.
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