Peacocks display another form of natural selection called  _[blank]_.  tail selection  gene selection  sexual selection  mate selection

I am pretty sure it is Sexual selection.

Passover is the Jewhish holiday in which someone would eat matzo at a Seder.

The Passover or Pesah is an important Jewish holiday, which lasts 7 days. It is a commemoration of Jewish liberation from slavery in Egypt under the leading of Moses. The Passover Seder marks the beginning of the Passover on the evening of the 15th day of Nison in Hebrew calendar ( late March or April ).

Matzo, matzah, or matza is an unleavened flatbread that is part of Jewish cuisine and forms an integral element of the Passover festival.