|Formulated||to express in precise form; state definitely or systematically:
He finds it extremely difficult to formulate his new theory.
to devise or develop, as a method, system, etc.
to reduce to or express in a formula.
|important||of great significance or value.
important habitats for wildlife
|limestone||a hard sedimentary rock, composed mainly of calcium carbonate or dolomite, used as building material and in the making of cement.|
1. a surviving mark, sign, or evidence of the former existence, influence, or action of some agent or event; vestige:
Testing the definitions app