Puzzle 19

It's taken out of decaf coffee.

Company 2010's The Social Network was based on.

Commonest gas in the air we breathe.

Land near the ocean, the coastline.

Keeping an eye on health, other stats via a phone.

Sets of false teeth.

The Y in DIY.

Her tale is written by Margaret Atwood.

Prompt to aid memory via a phone app entry.

The Blues siblings, Dan Aykroyd and John Belushi.

Lawyers may object: asked and __.