Q: Gates of the Arctic National Park and Preserve is a U.S. National Park in Alaska. It is the northernmost national park in the U.S. (the entirety of the park lies north of the Arctic Circle) and the second largest at 8,472,506 acres (3,428,702 ha) (34,287 km2), slightly larger in area than Belgium. The park consists primarily of portions of the Brooks Range of mountains. It was first protected as a U.S. National Monument on December 1, 1978, before becoming a national park and preserve two years later in 1980 upon passage of the Alaska National Interest Lands Conservation Act. A large part of the park is protected in the Gates of the Arctic Wilderness which covers 7,167,192 acres (2,900,460 ha). The wilderness area adjoins the Noatak Wilderness Area and together they form the largest contiguous wilderness in the United States.

When did gates of the arctic become a national park?
A: 1980. How to explain the answer? To answer the question, consider the following: It was first protected as a U.S. National Monument on December 1, 1978, before becoming a national park and preserve two years later in 1980 upon passage of the Alaska National Interest Lands Conservation Act.

Q: A period is a horizontal row in the periodic table. Although groups generally have more significant periodic trends, there are regions where horizontal trends are more significant than vertical group trends, such as the f-block, where the lanthanides and actinides form two substantial horizontal series of elements.

Based on this passage, this is a horizontal arrangement of elements in the periodic table?
A: A period. How to explain the answer? To answer the question, consider the following: A period is a horizontal row in the periodic table.

Q: The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time, as a year is a unit of time equivalent to approximately 365 days.

What is the distance that light travels in one year called?
A: a light - year. How to explain the answer? To answer this question, we should know that: As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).

Q: Context: "Medley: Aquarius / Let the Sunshine In (The Flesh Failures)" (commonly called "Aquarius / Let the Sunshine In", "The Age of Aquarius" or "Let the Sunshine In") is a medley of two songs written for the 1967 musical Hair by James Rado and Gerome Ragni (lyrics), and Galt MacDermot (music), released as a single by American R&B group The 5th Dimension. The song peaked at number one for six weeks on the US Billboard Hot 100 pop singles chart in the spring of 1969. The single topped the American pop charts and was eventually certified platinum in the US by the RIAA. Instrumental backing was written by Bill Holman and provided by session musicians commonly known as the Wrecking Crew. The actual recording is something of a "rarity"; the song was recorded in two cities, Los Angeles and Las Vegas, then mixed together in the studio, afterwards.

Question: who wrote the song the age of aquarius?
A:
James Rado and Gerome Ragni ( lyrics ) , and Galt MacDermot ( music ). How to explain the answer? The relevant sentence in the passage is: "Medley: Aquarius / Let the Sunshine In (The Flesh Failures)" (commonly called "Aquarius / Let the Sunshine In", "The Age of Aquarius" or "Let the Sunshine In") is a medley of two songs written for the 1967 musical Hair by James Rado and Gerome Ragni (lyrics), and Galt MacDermot (music), released as a single by American R&B group The 5th Dimension.