Potpourri: This Greek admiral of Darius I sailed upto the the Indus river in the 5thc?

Questions

before baking a 'baked alaska', with what is the ice cream covered?

it takes 3,000 cows to supply the nfl with enough leather for a year's supply of ______?

in greek mythology, who was leda's husband?

in greek mythology, who was tyndareus' wife?

who is the world's biggest wool producer?