Even though pet rabbits have been our companions for many thousands of generations of rabbits, they still have an innate fear of being attacked by an unforeseen predator. (smallanimalchanel.com)
For thousands of generations people used gelatin along with meat and saturated fat to satisfy their hunger and keep themselves healthy. (grassfedgirl.com)
According to this approach, men and women over thousands of generations have had to adapt to different challenges that are related to reproduction. (sciencedaily.com)