What biomes spans the largest annual mean temperature range

Answer: Desert spans the annual mean temperature range.

Explanation:

Biomes are large ecological community of plant and animal on the earth surface that have characteristics for the environment they live in. A desert is an example of biomes. It is a barren area of land where there is high temperature and low precipitation (rainfall). It is a place where living conditions is difficult. Lact of vegetation exposed the areato direct sunlight and there is increased temperature. Desert are formed by weathering process I. e the breakdown of rocks into smaller particles through the activities of some agent like water or wind.