Part 3 31-39

1. Male seahorses get pregnant! Is this true? How?

Yes, it is true that male seahorses get pregnant! After the female and male seahorse have mated, the female seahorse inserts its ovipositor into the male's brood pouch and deposits dozens to thousands of eggs! The male then fertilizes the eggs inside his pouch.

2. Sound travels 15 times faster through steel than through the air. Why?

The molecules in a solid are arranged very closely together with little to no spacing at all. As the molecules in gas are arranged very far apart from each other, sound travels faster in it than in solids.

3. Infants blink only once or twice a minute while adults average around 10. Why do we blink so many times? What is the purpose of blinking?!

When we blink, our eyes secrete a liquid that helps to lubricate them and keeps our eyes from becoming dry. Blinking also protects our eyes from irritants as our eyelashes helps to ward off dust and other irritants. The reason why adults blink more than infants is because infants do not require as much eye lubrication than adults because of the small opening between their eyelids. Additionally, infants do not produce tears during their first month of life and they also sleep more than adults.

4. French kissing involves all 34 muscles in the face. Really? Which 34 muscles on the face? Show me a diagram and explain how it works!

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