Puzzle 6

They orbit the Sun; 1970's video game

Piano Man, Uptown Girl, We Didn't Start the Fire

Russian nuclear weapon detonated in 1961

Caesar's famous last words

Organisms interacting in their environments

To get acquainted, versed, familiar with

Perfect spot to watch the Great Migration

The best feature of an antenna

Water free

Escaped slave leader in the Third Servile War

Church of the Holy __, Jerusalem Christian site

Spanish producer of sparkling wine

Mollusk, for one