What new techniques did people learn during the neolithic revolution

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

On nights when we see the new moon phase, what side of the moon are we seeing?

To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 6x + 5y = 2 4x + 2y = 8 a) subtract 2 times the second equation from 3 times the first equation b) subtract 3 times the second equation from 2 times the first equation c) subtract 5 times the second equation from 2 times the first equation d) subtract 2 times the second equation from 5 times the first equation