What is the term used to identify where the vertical and horizontal lines of a graph meet

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.

What happens to lovers when there are decreased levels of serotonin in the brain?

Isaw him _ .(a)danced (b)dance (c)dancing