Who was the first to sign the Constitution?

George Washington,

Explanation:

as president of the Convention, signed first, followed by the other delegates, grouped by states in progression from north to south.

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation:

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.