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{{for|Rosharan life|a list of Rosharan flora and fauna}}
Gravitational acceleration on Roshar is notably lower than usual, at 6.87 m/s<sup>2</sup>, or 70% of the cosmere standard.{{au ref|roshar}} This is due, in part, to the planet's small size; Roshar has a circumference of approximately 22110 miles, giving a radius of 3519 miles, and comes in just under 90% of the cosmere standard size.{{au ref|roshar}}{{wob ref|10231}} These yield a planetary mass of 3.387×10<sup>24</sup> kilograms. The main continent lies primarily in the southern hemisphere, spanning from just a few degrees north of the equator to about 55° south of the equator, and extends approximately 120° longitude.{{map ref|Roshar}} It covers roughly 4×10<sup>7</sup> square kilometers.
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The rainwater in highstorms is laced with a sort of slurry called [[crem]]. When crem dries, it hardens into rock. Since the highstorms always sweep from east to west, crem builds up on the eastern side of anything that stays still and isn't regularly cleaned. This process occurs both on a local scale and on a continental scale. Over time, the continent is very slowly shifting across the planet as the highstorm causes erosion and leaves crem deposits.
=== Fauna ===
Rosharan fauna have adapted to their unique environment in a number of interesting ways. Lower than usual gravity allows some of the native creatures to grow spectacularly large.{{qa ref|532|3|Did you have to do lots of research?|date=Sep 16th, 2010}} There are crustaceans (ranging from tiny crabs to lumbering chulls) and molluscs that retreat into their shells during the highstorms. Others have dens or pupate. There are also creatures, like the warm-blooded [[sarpenthyn]], that vaguely resemble a tentacled mollusc with no shell and can ooze into the cracks between rocks.
Chulls are very important crustaceans in Roshar. They are herded like cattle, but pull large carts like oxen would.
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