The anaerobic cellular systems or anaerobic respiration use fermentation because the anaerobic cellular systems oxygen is absent. Fermentation takes place in the absence or in the partial pressure of oxygen to produce alcohol or lactic acid. This is the way of production of ATP which is need for various cellular processes.
If fermentation was not there, then the anaerobic cellular systems could not produce energy and the cellular processes could not occur. In the absence of fermentation, no ATP would be produced and the cells would gradually die.
Energy stored in glucose molecules is used to form ATP during cellular respiration.
Answer:
Animals burrow tunnels into the ground
Explanation:
The geosphere is composed of all the crust on the plant. As all other spheres do, the geosphere too is in constant interaction with the other spheres. In this case we have animals that burrow tunnels into the ground. The ground is part of the geosphere, while the animals are part of the biosphere, which is the sphere that is composed of all living organisms. Since the animals are doing an activity that changes the ground, we have a situation in which the biosphere interacts with the geosphere.