Why would it be hard to discover a planet that is closer to the sun than mercury
He didn't discover silk, but wanted to trade for silk. They knew about it in Europe, but it was expensive and hard to get. The Silk Road was a hard dangerous trip for people.
it is hard and sometimes soft
the paticle that was hard to detect was neutrons because it had no electrical charge.
sometimes
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That's a hard stuff to discover.
the paticle that was hard to detect was neutrons because it had no electrical charge.
the paticle that was hard to detect was neutrons because it had no electrical charge.
Work Hard. Have Fun. Make History
It Depends on how hard you are hurt sometimes,sometimes not
The fracture of an opal can be hard or smooth , An opal can have as many fractures as any other mineral can . Sometimes opal can be smooth , sometimes they can be hard . The fracture of an opal is hard and smooth .