Use the drop–down menus to select the best answers. The basic unit of life is the . The brain and spinal cord are made out of nerve .
Answer
Selection 1:
cell
Selection 2:
tissue

Question

Use the drop–down menus to select the best answers. The basic unit of life is the . The brain and spinal cord are made out of nerve .

Revolt · Accepted Answer

Selection 1: cell; Selection 2: tissue

Introduction