Category: advertising: it is not 100% pure soap, but 99 44/100% pure.?

Questions

Nature - What has approximately 1/4 pound of salt in every gallon?

Nature - What is the heart rate of the blue whale (in beats per minute)?

Nature - When does the human uterus expand 500 times its normal size?

Nomenclature - Eras are divided into units called ?

Not Telling! - What can be either new, last or gibbous?