Secondary consumers include the baleen whale and the much smaller herring. The baleen whale is a large mammal with few predators that filter materials from the ocean through their mouths, this material includes algae and plankton. Herring is a smaller fish that also consumes algae to provide food for survival.
Answer:
1. Bacteria cannot live above 100 degrees Celsius; archaea can thrive in extreme temperatures. Archaea are actually extremophiles. They can survive in extreme physical and geochemical conditions.
2. Bacterial cell walls have peptidoglycan (mesh-like structure also known as murein); archaeal cell walls do not have peptidoglycan.
I believe the answer for the above question is Gene pools. Gene pools are the total number of genes of every individual in an interbreeding population; contains variations in genes, the relative gene frequencies, and also the allele frequencies. Relative frequency being the average number of occurrences of a particular event in a large number of repeated units while the allele frequency of an allele compared to other alleles of the same gene in population.