Answer:
The type of rock can tell you if the land was formed by layers of sediment, lava, etc. Fossils can show how old they are and therefore how old the land around it is
Explanation:
Answer: What grade is this for
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Answer:
They have small crystals.
Explanation:
Extrusive igneous rocks form when lava reaches the Earth's surface a volcano and cools quickly. Most extrusive or volcanic rocks have small crystals. Examples include basalt, rhyolite, andesite, and obsidian. Intrusive, or plutonic, igneous rocks form when magma cools slowly below the Earth's surface.
Jupiter, Uranus, Neptune, and Mars.
