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.
Flash cards are very useful when studying. They are very simple to make. All you are required to do is write a question or phrase on the front of the card, and the answer or its meaning on the back. You may find playing games with your flash cards is a fun way to memorize medical terminology. Whatever you decide to do, studying these medical terms makes your life easier.