The sperm is the main reproductive cell in males. The sperms differ in that each carry a set of chromosomes dividing each into either a male, or female sperm. The females differ in that they carry a X gene, while the male sperm carry a Y gene.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 21 degrees Fahrenheit, and moderate during winter with an average difference of 20 degrees Fahrenheit. The annual average precipitation at Little Rock is 50.93 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 5.73 Inches. (LITTLE ROCK ADAMS AP Weather station, 3.38 miles from Little Rock)
Average annual rainfall varies between 750 and 1000 millimetres (30 to 40 inches) in the drier eastern part of the country, while most other parts have average yearly totals of between 1000 and 1350mm (40 to 54 inches).