Dating / Relationship Statistics
Relationship Dating Statistics Data Percent of the adult American population that is single 44% Number of Americans who use online dating services 49,000,000 Ratio of single men to single women …
Number of Known Species in the World
Category Total Species Totals Vertebrate Animals Mammals 5,490 Birds 9,998 Reptiles 9,084 Amphibians 6,433 Fishes 31,300 Total Vertebrates 62,305 Invertebrate Animals Insects 1,000,000 Spiders and scorpions 102,248 Molluscs 85,000 Crustaceans …