During the nitrogen cycle? ammonia is turned into sugar?
atmospheric nitrogen is converted to fixed nitrogen?
nitrogen is converted to oxygen and sugar?
oxygen and sugar are converted to nitrogen?

Is there any solid scientific evidence that humans have been cloned?

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

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?