Describe two different hypotheses of the origin of early cell structure

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

Why should organisms reproduce more offspring than will survive? select all that apply.

Below are the three main organs that make up the plant body.