1. what must happen at point “a” in order for a metamorphic rock to be transformed into an igneous rock? a)…

1. what must happen at point “a” in order for a metamorphic rock to be transformed into an igneous rock? a) it must be compressed by high temperatures and pressure within earth’s crust. b) it must be soaked in water until it dissolves and reforms in a different shape. c) it must be weathered into sand grains and compressed into multiple layers. d) it must be pulled under earth’s crust, melted, and forced out above the crust to cool. the rock cycle

1. what must happen at point “a” in order for a metamorphic rock to be transformed into an igneous rock? a) it must be compressed by high temperatures and pressure within earth’s crust. b) it must be soaked in water until it dissolves and reforms in a different shape. c) it must be weathered into sand grains and compressed into multiple layers. d) it must be pulled under earth’s crust, melted, and forced out above the crust to cool. the rock cycle

Answer

Brief Explanations:

Metamorphic rocks form from pre - existing rocks (including igneous rocks) under high temperatures and pressures. Igneous rock must be subjected to high temperatures and pressures within Earth's crust to transform into a metamorphic rock. Options b, c, and d describe processes related to other rock - forming or rock - changing mechanisms.

Answer:

a) It must be compressed by high temperatures and pressure within Earth's crust.