Analyst Questions

Unlike other gas cycles, the phosphorus cycle differs in having atmospheric reservoir. No other gases are involved in it.

All atoms of an element have the same number of protons. The number of protons in an element is a primary identifier known as its atomic number. The number of electrons is the same as the number of protons.

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.

Burning gasoline is the only process that involving in a chemical change in the given options. A chemical change is a change in the starting substances that are called reactants from the formed new substances that are called products. 

Exodusters migrate to Kansas and other western states as part of the Exoduster Movement or Exodus of 1879. It was the first general migration of black people following the Civil War.

Exodusters was a name given to African Americans who migrated from states along the Mississippi River to Kansas in the late nineteenth century.

The world's largest silver producer is Mexico.

The Big 12 Championship Game is a college football game held by the Big 12 Conference. The game will be played at AT&T Stadium in Arlington, Texas until at least 2021. The game was played each year since the conference's formation in 1996.