The is a muscle in the bottom of the chest that bends downward to draw air in, and bows upward to force air out of the lungs. a. diaphram b. bronchi c. trachea d. heart

Complete the statements to identify the first two steps of meiosis i. (1 ) the first and longest step of meiosis i is called i. (2)the second step of meiosis i is called i.

Nucleic acid certain protein cell membranes certain carbohydrates

The pronunciation aid that determines the stress placed upon a syllable is the