AP BIOLOGY

Detailed explanation-1: -The biosphere is made up of the parts of Earth where life exists-all ecosystems. The biosphere extends from the deepest root systems of trees, to the dark environments of ocean trenches, to lush rain forests, high mountaintops, and transition zones like this one, where ocean and terrestrial ecosystems meet.

Detailed explanation-2: -The sum of all the ecosystems of the world. It is both the collection of organisms living on the Earth and the space that they occupy on part of the Earth’s crust (the lithosphere), in the oceans (the hydrosphere) and in the atmosphere. The biosphere is all the planet’s ecosystems.

Detailed explanation-3: -The biosphere (from Greek bíos “life” and sphaira “sphere"), also known as the ecosphere (from Greek oîkos “environment” and ), is the worldwide sum of all ecosystems. It can also be termed the zone of life on Earth.

Detailed explanation-4: -The large biosphere is divided into large parts of biomes. Scientists classified biomes into five different types: tundra, grassland, forests, deserts, and aquatic biomes. Rivers, lakes, seas, oceans, and other aqueous habitats are inhabited by a large diversity of plants and animals.

Detailed explanation-5: -Viewed as limited to only the living organisms, the biosphere occupies about 0.00008 percent of the mass of the earth (Knight and Schlager 2002).