Examlex
Peter I of Russia used western tactics, training, and discipline in modernizing his army.
Biomineralization
The process by which living organisms produce minerals to harden or stiffen existing tissues.
Rock Strata
Layers of sedimentary rock that are arranged in a chronological sequence, each layer typically representing a period of geological time.
Erosion
The process by which natural forces such as water, wind, ice, and gravity wear away soil, rock, or land.
Origination Rate
The speed at which new species or genetic variations appear within a given lineage or ecosystem over time.
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