The answer is C.<span>saguaro cactus and sagebrush both needing water in the desert.
they are competing for water D is parasitism A is </span><span>a commensal relationship</span><span> and B is mutualism </span>
<span>Erythrocytes. :) Hope that helped</span>
You did not give any details so...
But, I do know that 'Molly' is a 'club drug.'