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.
Answer:
Wearing a mask and social distancing, there is nothing else I could fins and he says "even people vaccinated will wear a mask".
He explains that since they track people it is easier to stop the spread
Answer:
leader? man? person, it could be anything depending from where this came
I think the United States is a well developed country. Like if you see India or Africa they are still developing.
I hope this helps :)