Most of us have whiled away each and every one of our waking hours upon the planet we call Earth, so that should make us experts regarding our big, blue marbleùright? WeÆre all aware that Earth is a spinning orb, but how many among us can name a human endeavor that has affected the rate of rotation? Or stateùwithout a worrisome glance overheadùthe number of house-sized, outer-space snowballs that burn to steam daily in EarthÆs atmosphere? The 48 cards in this deck pose such educational and entertaining questions on their fronts and provide well-researched answers on their backs. Equally enjoyable as a solo study or a quiz game with family and friends, the Plant Earth Quiz Deck covers everything from gravel to gravity regarding the revolving orb we all call home.