Examlex
Solve the system of equations using the substitution method.
Variation Among Organisms
The differences in physical form, physiology, and behavior among individuals within a species, driven by genetic and environmental factors.
Galapagos Islands
An archipelago of volcanic islands in the Pacific Ocean, known for their unique ecosystem which influenced Charles Darwin's theory of natural selection.
Mainland
The principal landmass of a country or continent; as opposed to islands or peninsulas.
Arithmetically
Relating to or based on arithmetic, the branch of mathematics dealing with the properties and manipulation of numbers.
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