In a living organism, what is an organ?

This is a new idea, more effective device or process. this an be viewed as the application of better solutions that meet new requirements, inarticulated needs, or existing market needs. what's the term?

What is the 77 element on the periodtic table

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity