UNIT  6  BIOSPHERE

The biosphere is all the living things on Earth. It is the global sum of all ecosystems. Living things interact with the other spheres. Plants and animals depend on the physical environment for the basics of life. They also help to mantain an alter their phusical environment.

The biosphere is the “zone of life,” consisting of all of Earth's living things and their environments. It is not really a separate sphere from the others but includes parts of all three. Life obviously occupies the oceans and the surfaces of the continents, but it also exists in the atmosphere.

UNIT 6  THE  EARTH
The Earth is a terrestrial planet, this means that it is made up mostly of rocks rather than gas (as Jupiter). It is the largest of the four terrestrial planets in size and mass. Terrestrial planets are inner planets.
The Earth consists of four spheres:

• geosphere
• hydrosphere
• atmosphere
• biosphere

 

If you want to read more information click on the pictures and visit the different spheres.

If you want to see the four spheres in a real picture, click on the image below:

Learn more about Earth´s spheres, click on this animated gif: