1. break the string of letters from procedure 1 into groups of three and write it below.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Consider the skeleton. which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

What organelle other than the nucleus houses dna in a eukaryotic cell?