Astronomers studying the planet of Acer have detected igneous rock under its surface. One astronomer makes a claim that some of the material that this igneous rock formed from used to be in sedimentary rock on the surface of Acer. If the scientist is correct, how could the sedimentary rock have become an igneous rock?

through heat from the planets core

Explanation:

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.