Which of the following is not valid evidence of global climate change? a. local temperature for one year is higher than the previous year. b. glaciers around the world are shrinking rapidly. c. coral reefs are bleaching because of a rise in water temperature. d. of the twenty warmest years since 1860, nineteen have been since 1980.

The correct answer is letter A

Answer;

2 atoms of nitrogen

Explanation;A compound is a substance that is made up of different types of atoms from different elements. For example water is a compound made up of hydrogen and oxygen atoms.In this case; Ni(NO₃)₂, is an example of a compound. It is made up of 1 nickel atom,  2 atoms of nitrogen, and six atoms of oxygen.