Lignite and bituminous coal are ____ rocks.
A) metamorphic
B) igneous
C) tectonic
D) ore
E) sedimentary

Question

Quizplus · Accepted Answer

Lignite and bituminous coal are both types of sedimentary rocks, formed from the accumulation and compression of plant remains over millions of years. Metamorphic rocks form from the alteration of pre-existing rocks due to heat and pressure, igneous rocks form from the cooling and solidification of magma or lava, tectonic rocks refer to the movement and deformation of rock layers due to tectonic forces, and ores are mineral deposits that can be extracted for economic benefit, but none of these terms apply to coal.

Lignite and Bituminous Coal Are ____ Rocks