In economics, returns to scale and economies of scale are related but different terms that describe what happens as the scale of production increases in the long run, when all input levels including physical capital usage are variable (chosen by the firm). The term returns to scale arises in the context of a firm's production function. It explains the behavior of the rate of increase in output (production) relative to the associated increase in the inputs (the factors of production) in the long run. In the long run all factors of production are variable and subject to change due to a given increase in size (scale). While economies of scale show the effect of an increased output level on unit costs, returns to scale focus only on the relation between input and output quantities.

is increasing returns to scale the same as economies of scale?

A: no

Throughout The Lord of the Rings, ''the Eye'' (the Red Eye, the Evil Eye, the Lidless Eye, the Great Eye) is the image most often associated with Sauron. Sauron's Orcs bore the symbol of the Eye on their helmets and shields, and referred to him as the ''Eye'' because he did not allow his name to be written or spoken, according to Aragorn (a notable exception to this rule was his emissary, the Mouth of Sauron). Also, the Lord of the Nazgul threatened Eowyn with torture before the ''Lidless Eye'' at the Battle of the Pelennor Fields.

is the eye of sauron in the books?

A: yes

The United States Coast Guard (USCG) is a branch of the United States Armed Forces and one of the country's seven uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the U.S. military branches for having a maritime law enforcement mission (with jurisdiction in both domestic and international waters) and a federal regulatory agency mission as part of its mission set. It operates under the U.S. Department of Homeland Security during peacetime, and can be transferred to the U.S. Department of the Navy by the U.S. President at any time, or by the U.S. Congress during times of war. This has happened twice, in 1917, during World War I, and in 1941, during World War II.

is the united states coast guard part of the military?

A: yes

Just Dance Unlimited is a subscription-based service for accessing a streaming library of songs from previous Just Dance games, and new songs that are exclusive to the service. A three-month subscription to Just Dance Unlimited is included as part of the game. All exclusive tracks (except tracks restricted to only Just Dance 2018 for the time being) are also playable on Just Dance 2016 and Just Dance 2017's Just Dance Unlimited. The 2018 game supports Just Dance Unlimited on PlayStation 4, Xbox One, Wii U, and Nintendo Switch.

can you add songs to just dance 2018?

A:
yes