What are the different levels found in a biosphere?

A biome is a large ecological area with similar climatic conditions. A biome can have multiple ecosystems within it. The biosphere includes all living organisms along with the spheres they interact with (lithosphere, hydrosphere, etc.). read more

In general, as far as I know, the very concept of biosphere was developed to embrase all the living organisms inhabiting the Earth. This wide complex is formed by series of interacting local ecosystems. So the ecosystem may be considered as level"one-step dawnward'. read more

Biosphere: When we consider all the different biomes, each blending into the other, with all humans living in many different geographic areas, we form a huge community of humans, animals and plants, and micro-organisms in their defined habitats. A biosphere is the sum of all the ecosystems established on planet Earth. read more