1. What is the fundamental law of energy that explains how humans rely on external sources?
Energy is neither created nor destroyed, only transformed
Обяснение
The conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. Humans require external sources of energy because biological metabolic processes alone do not suffice, necessitating fossil fuels, renewables, etc. This fundamental law underscores the importance of energy transformations in all systems.