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)
Other American states with lots of rain year round are in the southeastern part of the country and along the Gulf coast. The top 10 rainiest states average at least 50 inches (1270 mm) of rain a year, or 4 inches (101 mm) a month, based on state-wide averages of monthly precipitation. During summer, the country's rainiest weather creeps northward into Iowa, West Virginia and New Jersey.