Answer:
A genus ranks just above the species in an organism's taxonomic hierarchy. A genus is made up of any number of species, while a species is composed of any number of subspecies or breeds.
Explanation:
The awnser is D.for the question
The corpus callosum is the part of the mind that allows communication between the two hemisphere of the brain. it is responsible for transmitting neural messages between both the right and left hemispheres
This is a harder one to answer in general. Composition well is how it is formed, and the physical appearance is more along the lines of what we see. The mountains, hills, and valleys, as where the composition is all of it working together forming new areas ETC
