What about the law of conservation of energy in biology? Nature → Plants → Animals → Microorganisms → Nature

The total energy possessed by these things will never change, which is deduced from the conservation of physical energy. Energy cannot be produced out of thin air, nor can it be annihilated out of thin air. The total amount is certain, only available and unavailable. For example, coal emits original energy in the form of heat after combustion, and the total amount of energy remains unchanged, but the emitted heat cannot be reused. According to the principle of relativity, all matter has great energy, so future energy is not a problem.