Need which of the following structures acts as a life support system for the developing fetus?

a.

umbilical cord

b.

embryo

c.

zygote

d.

amniotic sac

Smoking cigarettes is a pervasive habit found in many parts of the world and a habit that could be explained by both microsociological and macrosociological forces. give an example of each that would be relevant to explaining the proliferation of smoking. how might your suggested micro- and macro-level analyses be linked

Which one of these patients requires oral care less frequently than every two hours? a two-year-old who is tube fed. an 26-year-old female who is unconscious. a 64-year-old patient with high cholesterol. an elderly male patient who is vomiting. read question

List three reasons people may begin using tobacco