Answer:
Nitrogen thet cannot be used by organisms. C.
Explanation:
Free nitrogen is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond. Because it is very stable, N2 is typically nonreactive, and takes a lot of energy to break them apart. Among these are the amino acids necessary for life to begin and which are the building blocks DNA is made from. Basically, any nitrogen that is in an organic compound is considered “fixed” nitrogen and N2 is considered to be “free” nitrogen
The diagram that would be used would be an energy pyramid.
The priority after administering is to assess fetal heart
rate. After administering an opioid to a laboring mother, the main concern is
to evaluate the effect on the fetus. Opioid administration can cross the
placental obstruction with signs as well as measuring heart rate and
variability. Subsequently after birth, there may be a reduction in attentiveness.
Maternal factors of a reduced blood pressure, constipation and dry month are of
a lesser importance.
Predators and prey are both in a constant struggle for survival, foxes with bigger ears tend to catch more mice, and live longer, because of this, foxes with smaller ears don't live as long, pretty soon all foxes have larger ears. The same goes for prey, Mice with padded feet live longer due to the foxes having more trouble hearing them, pretty soon all mice have padded feet, and the cycle continues.
The first animal fossils would be most like the main body bones. I hope that helped
