2. What 3 smaller parts of the DNA molecule make up a nucleotide?

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?

In order for you to hold your breath, your nervous system must send messages to your a. respiratory system b. digestive system c. heart in your cardiovascular system d. check in your muscular system

How does this procedure serve as a method of birth control?