You should consider how much you want to make, so make a budget. See if the equipment is good quality.
Only about ten per cent of the biomass is transferred from each trophic level to the next. The remaining 90 per cent is used by the trophic level to complete life processes . Biomass can be lost between stages because not all of the matter eaten by an organism is digested.
I would say its between A and D, Hope it helps.
IT IS BISEXUAL SINCE IT HAS BOTH MALE AND FEMALE PARTS
The correct answer would be letter C.