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Which organisms produce chemical energy for the rest of the environment?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy

Which of these chinese regions is the most densely populated?