Which statement best explains why compounds have different properties danny elements that form them? a. when elements from a compound, the bonds and structure of the elements change. b. when elements form a compound the masses of the elements increase c. when elements from a compound the masses of the elements decrease d. when elements from a compound the elements become neutral

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.

: -)

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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