The hot, dry biome with less than 250 mm of annual rainfall that is home to camels is the desert.
Deserts are defined primarily by aridity, not by sand or heat. They generally receive under 250 millimetres of precipitation each year, and can be hot, temperate, or even polar. Sparse vegetation and limited surface water create demanding conditions for life.
Camels are strongly associated with deserts because their bodies conserve water efficiently and tolerate heat. Their humps store fat, not water, and their broad feet help them travel across loose sand. Wild and domesticated camels have supported trade, transport, and pastoral communities across regions such as the Sahara and Arabian Desert for centuries.
A common mix-up is confusing deserts with grasslands or tundra. Grasslands receive more precipitation and support extensive grasses, while tundra is defined by cold conditions and permafrost. Deserts may also contain oases, temporary streams, and surprisingly diverse wildlife.