Give the own definition of the term hazard​

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

this is math not biology xd

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.