Bacteria can be classified as the two obvious answers here! Archaebacteria, and Eubacteria. Hence "bacteria" suffixing them, and then the three other options do not make sense, and are not a classification.
Semipermeable means something can be penetrated by a few things. that being said choices A and B can be eliminated.
Choice D would negate semi as it says all polar molecules, leaving choice C as the best answer
There are many different natural disasters that affect the population, including hurricanes, tornados, earthquakes, tsunamis, floods, flash floods, and fires. Hope this helps! :)
Answer: Fertilization
Explanation: Fertilization occurs when a sperm and an egg combine
C. They study true movement of earthquake waves