The answer is C. It eliminates the toxic chemical problem. Hope this helps!
The 3 domains of life would be, Archaea, Bacteria and Eukarya!
By using both of these schemes, energy source and locomotion, amoeboids can be classified properly. Both schemes play an important part of amoeboid’s taxonomy classification because these organisms changes its shape when feeding. Amoebas are traditionally classified under sub-phylum Sarcodina, single-celled with pseudopods (use for locomotion) but recent studies show that they are not monophyletic and actually belong to other groups of organisms — with locomotion and source of nutrients as basis.
sus pricipales factores limitantes son la disponibilidad de luz solar y la concentración de oxígeno disuelto y nutrientes en el agua
Agricultural chemicals is an example of a nonpit source of freshwater pollution
