Canada is the flattest region. its flatter than the rocky mountains
Roughest.
The flattest land form is called a plain. It is a broad, relatively flat area of land characterized by minimal elevation changes and typically lacks significant geological formations such as mountains or hills. Plains are often found in coastal regions or in interior areas that have been shaped by erosion or by the deposition of sediment over time.
The many regions on the Earth where life is possible are called habitable. The regions where life cannot be possible are called inhabitable.
Earth's polar regions are the areas of the globe surrounding the poles also known..part of what little sunlight the Polar regions receive, contributing to the cold.
Bodies of water such as oceans, seas and lakes.
Canada is the flattest region. its flatter than the rocky mountains
Abyssal plains
the sun drenched marivies.
The area around the poles.
Abyssal plains
The abyssal plains are flat or very gently sloping areas of the deep ocean floor. They are among the Earth's flattest and smoothest regions and the least explored. Abyssal plains generally lie between the foot of a continental rise (shelf) and a mid-oceanic ridge.
Abyssal plains
Sounds like Australia to me.
The flattest mountain in the World is a closely guarded secret. No Country wants to admit to having it.
Flattest.
flatter/flattest