I am not sure but I believe it is B. Precipitation because the definition is: <span>the action or process of precipitating a substance from a solution ^-^ Hope this helps</span>
The younger rock would be black and have like no stains and it would not be as dirty as the older rock hope this helps!!1
Decomposer's role is to break down dead food. They basically eat it, then the dead food or the dead animal gets ground into the ground, and makes the soil good. Like worms, or fungi, mushrooms, etc. Rotten fruit is not really wasted because 1) the decomposers eat it, and 2) it makes the soil good