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Sedimentary rocks are some kind of rock that i forgot about
Metamorphic rocks are a type of rock along with igneous and sedimentary rocks.
To make road stone you must first pulverise larger rock fragments.
The cragwas hard to hang on to for the rock climbers.
A metaphor is a comparison made without using the words "like" or "as." An example of a sentence including a metaphor might be, "Carolyn was a rock for her family following those hard days after Jim's death."
The rock I picked up had very good hardness and luster.
The wheeled rover had to make its way carefully across the rock-strewn surface of Mars. The volcano continued to erupt as the townspeople tried to escape through the rock-strewn streets.
Igneous rock is formed through the cooling and solidification of magma or lava.
you can crush it good or you can scratch it on something hard
Do you mean hard as in difficult or hard as in solid and difficult to penetrate? If your are describing something difficult you could say: "Getting the child to listen was like trying to catch water in a sieve." If you are talking about the surface of something, then say: "The biscuit was as hard as a rock."
She rocked the stage during her concert. And the second one is, she was hard as a rock during that bad phase.
Your question is an intrusion.Her intrusion into the meeting made the boss angry. That rock has an intrusion of another type of rock.