What is the primary source of energy for life on earth
- What is the primary source of energy for all life on earth
- What is the primary source of energy for most life on earth
- What is the primary source of energy for most life forms on earth
- What is the primary source of energy for life on planet earth
- What is the primary source of energy for most life on earth explain how it powers ecosystems
- What is the primary source of energy for sustaining life on earth