The esophagus is surrounded by smooth muscle. How does this structure help its function?

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?