Imagine yourself being stuck in a room with a five- or six-year-old child. It could be your little brother or sister, your niece or nephew, or your godchild. He/she asks you intriguing questions like

1. "Where do babies come from?",
2. "What's up there in the sky?", "
3. Why are leaves green, and not red or blue or anything?",
4. "Why is Grandma's hair white?"

How would you explain the following to a six year old child?