1.Write true or false. If the statement is false, tell why. A. Rocks can break down into sediments.
B. Rocks can change from sedimentary to metamorphic.
C. Coal is an example of an igneous rock.
D. New rocks form over time.
E. Marble is a sedimentary rock.
F. Kimberlite is an igneous rock.
G. All rocks are made of minerals.
H. Rocks and minerals are the same.
I. All minerals are made of rocks.
J. A mineral with a hardness of 6 will scratch a mineral with a hardness of more than 6.
2. What is the hardest known mineral?

your answer is c! hope this : )

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.