Puzzle 18

Legal protection for original ideas.

Historical era when permanent settlements emerged.

Problems that must be overcome.

Graph illustration of how work process develops.

The genuine article, something authentic.

Belly muscles used for singing, breathing.

Latin American nation where the Tikal pyramid is.

Repeating, three-word title of an *NSYNC song.

Describes a breezy, desolate, exposed place.

Single beam, illuminating a specific area.

Gorillas __, 1988 drama set in Rwandan mountains.