There is one requirement that must be met for a fuel to be considered a biofuel. that is a) the starting material must be co2 that can be fixed or turned into other molecules. b) the biomass is produced year after year through sustainable farming practices. c) it does not harm ecosystems, contribute to acid rain, or worsen global warming. d) they do not produce any greenhouse gases when used.

Answer is: A)the starting material must be CO2 that can be fixed or turned into other molecules. 
Biofuel is renewable energy source, but not green energy source. Green energy does not harm ecosystems, contribute to acid rain, or worsen global warming. Biofuels produce greenhouse gases (carbone dioxide, methane). 

A situation wherein a premature infant in the neonatal intensive care unit exhibits worsening respiratory distress and is noted to have abdominal distention, absent bowel sounds, and frequent diarrhea stools that are positive for hemoccult, the diagnosis would be most likely to correlate with the symptoms is called the necrotizing enterocolitis. Feeding intolerance with abdominal distention tenderness and bloody or hemoccult-positive stools are needed when there are observations in the development of NEC in the premature newborn. Existing dilemma of NEC may also include diarrhea and worsening of respiratory distress. Noted as well is the decrease or absence of bowel sounds. Inflammation of the stomach of the child and digestive tract which usually triggers womiting, diarrhea and fever are effects of the rotavirus. On the other hand, adults are seen with garamycin-resistant bacteria.