PinkyT5539 PinkyT5539

20-12-2020
Biology

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When an igneous rock forms on top of the Earth's surface it cools quickly and there is almost no time for crystals to form. Obsidian shown below is an example. What type of igneous rock is this?

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Bobthebulider10 Bobthebulider10

20-12-2020

Answer:one of the three main rock of cooling and solidification of magma or lava

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