Interpreting an Expression Quick Chec How many factors does the expression (17 –r) have? O four O two one three

it would be heredity

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.

answer; hydrologic cycle;