Q: Fact: the mantle is located just below Earth 's crust
Question: Much iron is in

A: Earth's second layer

Q: Fact: remora fish eat food by attaching themselves to sharks and eating the food left behind
Question: Small fish can be safe swarming dangerous sharks when

A: they are symbiotic

Q: Fact: magnifying glass is used to see small things by making objects appear bigger
Question: A magnifying glass would be useless in viewing?

A: elephant

Q: Fact: good bacteria grow on a human 's skin
Question: What would be a benefit of skipping showers?

A:
fostering healthy bacteria