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The vertical elements are called groups. They have similar chemical properties.
Selective breeding.
The Scientific Method
regions
The change of inherited characteristics of species over long periods of time is called evolution.
Organism
inbreeding
inbreeding
A region
A collection of similar ecosystems are is called a biome.
It is called a representative sample.
a concept
stratificatin
Large geographic areas with similar climates and ecosystems are called Biomes!
wieners.
Areas with common characteristics are called regions. This is the definition that mostly relies on the geographical features to define a particular area.
Groups, or Families.