They are part of our immune system they help protecting your body infection,illnesses ,and syndromes etc
Hydrosphere- encompasses all marine environments.
Lithosphere- encompasses all terrestrial environments
Atmosphere- encompasses all areal environments
Biosphere- how the previous three spheres all combine to make the Earth
They essentially do what humans do. They eat the food, which in this case is decaying materials (detritus), break down the material chemically and mechanically, absorb the nutrients they need, then excrete the 'waste', which contains other nutrients. Soil is basically clay, sand, silt and decomposer's cr*p.<span />
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sun light and water and fresh air
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My answer to you is that the positive willing to do tests and experiments over and being okay with being wrong if you are.
