Problem: Add spaces: Discoveryandstudyofradioactivityduringthepastcenturyhasprovedthattherehasbeennopasteternityofmatter!Radioactivityisdescribedasaprocessofdisintegration.

Spaces added: 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.

Problem: Add spaces: MicroSDcardisaflashmemorycarddevelopedbySanDisk.Thisamultimediastoragedeviceusedincellularphones,handhelpGPSdevices,digitalaudioplayers,portablemediaplayers,digitalcamerasetc.MicroSDcardsarethevariantofSDcard.

Spaces added: Micro SD card is a flash memory card developed by SanDisk. This a multi media storage device used in cellular phones, hand help GPS devices, digital audio players, portable media players, digital cameras etc. Micro SD cards are the variant of SD card.

Problem: Add spaces: AsBunnyPennybriefsyouonthesituation,it'syourmissiontogetbackthecarrotsstolenfromBunnyLandbydirtystinkingratstostarvethebunnynation.Shootthoseevilratsinthisgreatside-scrollingshoot'emup.

Spaces added: As BunnyPenny briefs you on the situation, it's your mission to get back the carrots stolen from BunnyLand by dirty stinking rats to starve the bunny nation. Shoot those evil rats in this great side-scrolling shoot 'em up.

Problem: Add spaces: Vitaminsarevitalorganiccompoundswhichthebodycannotproduceitselfandthereforemustbesuppliedwiththediet.

Spaces added:
Vitamins are vital organic compounds which the body cannot produce itself and therefore must be supplied with the diet.