Practicing Success
Which ecosystem on earth does not require sun as an energy source? |
Terrestrial ecosystem. The deep sea hydro-thermal ecosystem. Forest ecosystem. Pond ecosystem. |
The deep sea hydro-thermal ecosystem. |
Except for the deep sea hydro-thermal ecosystem, sun is the only source of energy for all ecosystems on Earth. Of the incident solar radiation less than 50 per cent of it is photosynthetically active radiation . |