What characteristic define the biome two anseres

Biomes are very large ecological areas on the earth's surface, with fauna and flora (animals and plants) adapting to their environment. 

Biomes are often defined by abiotic factors such as climate, relief, geology, soils and vegetation.

A biome is NOT an ecosystem, although in a way it can look like a massive ecosystem

Ithink it’s one of those things that you put the object on