That's In The Greek Alphabet!
400

A pouplar internet phrase: "Erm what the ____?"

What is sigma?

800

It comes before 3 in a term for healthful fatty acids found in fish (the 6 type is found in meat, the 9 inalmonds)

What is omega?

1200

In 1941 this airline with a Greek letter for a name moved its headquarters to Atlanta

What is delta?

1600

It's letter No. 3 in the Greekalphabet; the same-named "rays" hulked out Bruce Banner

What is gamma?

2000

This letter got some bad publicity when it became a COVID variant first detected in South Africa in 2021

What is omicron?

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