Inert gas (4 letters)

About 1 percent of the atmosphere (5 letters)

Bro's kin (3 letters)

Job for un docteur (3 letters)

Sound transmission (5 letters)

___ out (resolve) (4 letters)

Steering system part (6 letters)

Salt of element #53 (6 letters)

Tiny building block (4 letters)

Danish physicist Niels (4 letters)

"___ pro nobis" (3 letters)

Bagpipe, e.g. (4 letters)

Turndowns (4 letters)

Spline (4 letters)

Audible pauses (3 letters)

Actor Jeremy (5 letters)

Wind element (4 letters)

Household appliance (4 letters)

Common contraction (3 letters)

Some grad sch. requirements (3 letters)