The answer is "Groundwater"
Phospholipids are typically made up of two fatty acids,a glycerol molecule and a phosphate group that is modified by an alcohol.The phosphate group is negatively charged, it is hydrophilic and it is describes as the polar HEAD of the phospholipid. The fatty acid chains have no charge [neutral], they are hydophobic and they are describe as the non-polar TAIL of the phospholipid.
The answer is D has mitochondria and chloroplasts. In the leaf, so must have chloroplast, most eukaryotic cells have mitochondria (powerhouse of the cell)
The AB blood type has both A and B alleles.This illustrates principle of co-dominance
