Find all real solutions. Answer in the exact form. Note that identities are not required to solve this exercise. 
Definitions:
Rain Forests
Dense, typically tropical forest regions receiving a high amount of rainfall annually, home to a vast diversity of plants and animals.
Hydrothermal Vent
Place where hot, mineral-rich water streams out from an underwater opening in Earth’s crust.
Ecosystem Energy
Refers to the flow and conversion of energy through an ecosystem, from primary production by photosynthesizers to various trophic levels.
Sun
The star at the center of our solar system, around which Earth and other planets orbit, providing light and heat.
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