Image result for Compare altricial organisms to precocial organisms.
In biology, precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching. The opposite developmental strategy is called altricial, where the young are born or hatched helpless. These categories form a continuum, without distinct gaps between them.
A precocial bird is "capable of moving around on its own soon after hatching." The word comes from the same Latin root as "precocious." Altricial means "incapable of moving around on its own soon after hatchling." It comes from a Latin root meaning "to nourish" a reference to the need for extensive parental care ...
B a textbook would be an example of a medium. Mediums are the way that a piece of writing is delivered to the reader meaning that a textbook is the only clear example of a medium there.
