How does a select committee differ from a standing committee

Standing Committees are permanent, while Select Committees may be permanent or temporary.

A standing committee is a permanent legislative panel established by the U.S House of Representatives and U.S. Senate rules. But a select committee of the U.S. Congress is a committee appointed for a special task; such appointment usually delineates the procedures for the members of the committee.

i think they would live in caves or natural tunnels