Directions: drag each tile to the correct box.
a group of scientists followed a set of steps designed to detect metals found in different sources of drinking water. the steps are
shown out of order. arrange the steps so that they correctly describe the investigation as the scientists should have performed it.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

if you know your abc's you should be able to get your answer or just use google