3 ms·
There are a small number of organisms that get their energy ultimately from mineral sources and a few cases of an organism getting some energy from something si
by colechristensen 4y ago
There are a small number of organisms that get their energy ultimately from mineral sources and a few cases of an organism getting some energy from something similar to photosynthesis from local radioactive sources but the vast majority of energy used by living things by a wide margin comes from solar radiation.
Unless your food chain contains a significant number of extremophiles (like something eating near hydrothermal vents), essentially everything can be traced back to photosynthesis.