The Russians had turned to a Market system.
Agricultural use, energy and to cool factories
or
construction, watering lawns, manufacturing use
This question actually refers to body parts: otoliths are small structures in your inner ears (in the semicircular canals, so this part is correct) that shift when you move - to help you sense your body position (so this part is also true).
But they're not exactly stones - they are small particles, so that's why the statement is false.
Spain for the majority of the next 300 years. This considering it owned everything from Terra del Fiugo to San Francisco.