Puzzle 1

"Keep your friends close, but keep your __ closer".

"Survival of the __", coined by Herbert Spencer.

A measure of the combining power of an element.

A pancake-like food cooked on a hot griddle.

Calmly detached.

Large felines like tigers and leopards.

Light bulb that uses a vapor like iodine.

Making music like a bird.

Musical following an 1899 New York City strike.

Old word for unscrupulous person.

Prince Harry and Meghan's daughter.

Russian plane maker founded in 1939.

Shade of brown made with melted sugar and butter.

Superman's home planet.

Thin aluminum used to line oven trays, wrap food.

To revert to a former state.