Which were the first artistic representations created by humans? A. cave paintings B. sculptures C. dwellings

that would be cave paintings

Explanation:

the first known forms of art were cave paintings dating back to the times of ancient mesopotamia.  The paint was made of melted fat.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.