Explanation:
1. The big-bend gecko is longer by 7.9 centimeters (16.8 - 8.9 = 7.9).
2. The common kingsnake is longer by 87.6 centimeters (208.3 - 120.7 = 87.6).
3. The plain-bellied water snake is shorter by 30.25 centimeters (187.75 - 157.5 = 30.25).
4. The combined length of the tiger rattlesnake and Mojave rattlesnake is 220.89 centimeters (91.39 + 129.5 = 220.89).
5. The combined length of the two Western rattlesnakes is 204.26 centimeters (162.6 + 41.66 = 204.26).
6. The total length of the three brown water snakes is 347.863 centimeters (175.3 + 71.23 + 101.333 = 347.863).
7. The difference in length between the Eastern hognose snake and the Western hognose snake is 24.99 centimeters (114.49 - 89.5 = 24.99).
8. The difference in length between the many-lined skunk and the prairie skunk is 1.201 centimeters (20.6 - 19.399 = 1.201).
9. The combined length of the racerunner and the New Mexican whiptail is 56.899 centimeters (26.7 + 30.199 = 56.899).
10. The total length of the three Western fence lizards is 59.663 centimeters (15.222 + 23.444 + 20.997 = 59.663).