According to Science Daily, the most significant geological event that happens in ocean trenches is the gradual subduction of the Earth's crust down into its mantle. This process takes tens of...
A blockchain â originally block chain â is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block contains typically a hash pointer as a link to a previous block, a timestamp and transaction data. By design, blockchains are inherently resistant to modification of the data.
block. 1  a solid mass of wood, stone, etc., usually with one or more flat or approximately flat faces. 2  a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. 3  one of a set of cube-shaped pieces of wood, plastic, or the like, used as a child's toy in building. a mold or piece on which something is shaped or kept in shape: a hat block. a piece of wood used in the art of making woodcuts or wood engravings. Printing. the base on which a plate is mounted to make it type-high.