what is this form of union mentioned here?
A civil union  is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples.
Introduction
 is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. 
are the oldest rocks in the world in the grand canyon Yes, the rock layers exposed in the Grand Canyon and in the Grand Canyon National Park area range in age from about 200 million to nearly 2 billion years old. is there any river flowing through or alongside it? Yes, Colorado River what exactly is that canyon mentioned above? It is a steep-sided canyon carved by the Colorado River in Arizona, United States. what are some of the tributaries of the water body mentioned above? The Colorado is joined by over 25 significant tributaries: Green River,  Gila River , what are some of the flora found near this larger river? Creosote bush, saguaro cactus, and Joshua trees who were the first to explore this area? The Spanish began to explore and colonize western North America. has the state where the canyon is located, experienced any natural disasters? The first damaging earthquake known to be centered within Arizona occurred on January 25, 1906, also including a series of other earthquakes centered near Socorro, New Mexico. how many people live there? The United States Census Bureau estimates Arizona's population was 7,278,717 on July 1, 2019, a 13.87% increase since the 2010 United States Census. what is the state's policy on marriage between homosexual partners? Arizona became the first state in the United States to reject a proposition, Prop 107, that would have banned same-sex marriage and civil unions.
A civil union is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. It is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. It is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples
Civil union Civil union Civil union
Introduction Introduction Introduction
A civil union (also known as a civil partnership) is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. A civil union (also known as a civil partnership) is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. A civil union (also known as a civil partnership) is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. 
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Civil union [SEP] Introduction
A civil union (also known as a civil partnership) is a legally recognized arrangement similar to marriage, created primarily as a means to provide recognition in law for same-sex couples. Civil unions grant most or all of the rights of marriage except the title itself. Around the world, developed democracies began establishing civil unions in the late 1990s, often developing them from less formal domestic partnerships, which grant only some of the rights of marriage. In the majority of countries that established these unions in laws, they have since been either supplemented or replaced by same-sex marriage. Civil unions are viewed by LGBT rights campaigners as a "first step" towards establishing same-sex marriage, as civil unions are viewed by supporters of LGBT rights as a "separate but equal" or "second class" status.