Simplify the following text for a Grade 15 native English-speaking person.
Original: There are many practical applications of ecology in conservation biology , wetland management , natural resource management ( agriculture , forestry , fisheries ) , city planning ( urban ecology ) , community health , economics , basic & applied science and it provides a conceptual framework for understanding and researching human social interaction ( human ecology ) .
Simplified: There are many practical applications of ecology in conservation biology , wetland management , natural resource management ( agriculture , forestry , fisheries ) , city planning ( urban ecology ) , community health , economics , and applied science . It provides a framework for understanding and researching human social interaction .