common descent means the evolutionary in biology and how they have something linked with their common ancestors.
Because an antibody is "made" relative to the antigen, but kept at low levels when you are exposed the first time ("primary immune response"). The second time you're exposed to the same antigen, memory cells recognize it and the body produces a high level of antibodies, and the level of antibodies usually remains higher for a longer time ("secondary immune response"). This is your basic immune response (primary and secondary).
This explains exactly why vaccines are effective to extremely effective.
The kingdom is Animals.
The genus is Haliaeetus.
The species is leucocephalus are the statements which Julio can make about the bald eagle.
The option C is the correct answer.
Explanation:
Given that Bald eagle has binomial name as Haliaeetus leucocephalus.
Modern classification of binomial nomenclature is given by Carl Linnaeus.
From the modern system of classification the sequence is as kingdom, phylum, class, order, family, genus and species. The classification of bald eagle is:
Kingdom - Animalia
Phylum - chordata
class - Aves
Order- Accipitriformes
family - Accipitridae
Genus - Haliaeetus
species - leucocephalus.
The two word name of the species having genus first followed by species is binomial nomenclature which Julio has used for bald eagle as Haliaeetus leucocephalus.
