56:25 All of the following are examples of a primary source except:
a.
your history textbook
b.
a letter from the President
c.
the United States Constitution
d.
a photograph of a civil rights march

Discuss how relative and absolute dating are used to assign ages to rocks. specifically, how are the two dating methods different from each other? discuss the technique of absolute dating commonly used to date rocks.

According ti the following map, what are the most common mineral resources found in the united states?

Ano anu ang mga guhit na makikita sa mapa o globo? ibigay ang kuhulugan ng bawat isa