Disadvantages of nuclear fission are; hazardous waste production, non-renewable process, high capital cost, less energy than fusion, and security risks.
The difference between biotic and abiotic factors is in their origin and attributes; where biotic components are organic and abiotic factors are inorganic.
Abiotic factor refers to any non-living element, condition or phenomena that directly or indirectly influences the ecosystem. Meaning of abiotic factor