Add spaces: OneIrecordedspecificallyforMoodSwing9’smixtapeinlike‘98.

Answer: One I recorded specifically for MoodSwing 9’s mixtape in like ‘98.

Add spaces: AboutX3512:MultiStrandsPurpleRedAgateandIrregularShapeBlueTurquoiseNecklacewithExtendableChain

Answer: About X3512 : Multi Strands Purple Red Agate and Irregular Shape Blue Turquoise Necklace with Extendable Chain

Add spaces: Discoveryandstudyofradioactivityduringthepastcenturyhasprovedthattherehasbeennopasteternityofmatter!Radioactivityisdescribedasaprocessofdisintegration.

Answer:
Discovery and study of radioactivity during the past century has proved that there has been no past eternity of matter! Radioactivity is described as a process of disintegration.