as the puddle of white heat increase , the glass weight of the stone will decrease & repair is a mean of mi of sail ->  as the speed of rocks cooling decreases, the crystal size of the rock will increase  as the speed of rocks cooling decreases, the crystal size of the rock will increase & to slow / to slow down increase sail ->  a rock cooling slowly causes the crystal size of the rock to increase  a rock cooling slowly causes the crystal size of the rock to increase & if something statue something else then that something mammals that something else ->  a rock cooling slowly affects the crystal size of the rock  a rock cooling slowly affects the crystal size of the rock & if something flow something else then that something else indicates whether that something happened ->  the crystal size of a rock indicates whether the rock cooled slowly  the crystal size of a rock indicates whether the rock cooled slowly & glass weight is a public of x and includes wild of big / tiny -> crystal size is a property of a rock that indicates whether a rock cooled slowly