Physiography is another term for physical geography. Uniform means the observed things have very similar qualities, so uniform physiography would mean that the observed terrain remains relatively the same throughout.

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the Continent is snowy

Physiography is the study of the physical features and properties of the Earth's surface, including landforms, climate, soils, vegetation, and water bodies. It involves analyzing the interactions between these elements to understand the landscape's formation and characteristics. Physiography helps geographers and scientists gain insight into how natural processes shape the Earth's surface.

Physic, physiography, physiology, physique.