I have a bit of a strange question since I'm planning to do a research on yoghurts in American shops because I'm not from that country and I would be very grateful if someone could help me out with my questions.

1. I would need to know how are the yoghurts in American supermarkets composed on the shelves, are they packed in packs or are they composed one by one.

2. Do diferent sellers use the same system of composing the yoghurts and how many shelves does in avarage a glass case have.

3. And the last thing I would need is to know in how many lines are the yoghurts composed on to the shelves.

I say thank you to all who will try to help me as I indeed need help with this research. Hope to see some answers to my questions. Have a good day.