What Am I Riddles

Question: Occurring once in a hundred years and once in thousands. But never in a day or a year or a century.

Question: Name two different words using following words only... 1. Without me 60% living beinga cant survive.. 2. Without me none ( living+non-living cant survive... 3. Both have five letters each but both r anagrams of each other..

Question: A box without hinges, key or lid, yet inside, gold treasure is hid. What am I?

Question: When you are born, all you have is me. And even though you're powerless, you are filled with glee. What am I?

Question: Can I walk? No. Can I stand? No. I almost never wear shoes. I can't feel my legs. I wear blue, yellow, white, or black socks. When I do wear shoes it is black and white Adidas 👡s. What am I?