The correct answer is: [B]: "beneficial" .
______________________________________________________
{<u>Note:</u> A symbiotic relationship known as "mutualism" — in which both organisms benefit.}.
______________________________________________________
A. Water falls from the atmosphere as rain, ice, or snow
C. the answer is c. i just took this test on keystone (i think this is keystone question. right?0
<span>I believe it is light, but this is kind of a confusing question. Technically there is a independent and dependent variable in the question. The variable being manipulated is light, and the earthwork activity depends on the light. </span>