A new model explaining this mysterious process suggests the core was created as dribs and drabs of iron percolated inward from Earth's lower mantle, according to a study published Oct. 6 in the journal Nature Geoscience. The mantle is the viscous, rocky layer between the crust and Earth's iron core.
Definition of flash card. : a card bearing words, numbers, or pictures that is briefly displayed (as by a teacher to a class) usually as a learning aid.
Chinese poker. The term Chinese poker is commonly used to refer to a different card game, Big Two. The term may also refer to a Vietnamese card game, Thirteen (card game) Chinese poker also known as (Chinese: åä¸å¼ ; literally: Thirteen cards) is a card game based on poker hand rankings.