Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis? A. Prometaphase
B. Metaphase
C. Anaphase
D. Telophase

Prometaphase

Explanation:

Mitosis is the process in which the cell divided into daughter cells. The DNA of mother cell is pulled apart. The DNA of mother cells is contributed to the daughter cell. The daughter cell makes the protein its self that help them to read the DNA that contributed from mother cell.

The new cells unpacked themselves into the new thin fiber. It will generate the new fiber nuclear envelope. It is used to store the new genetic material of the nucleus.

Prometaphase is the stage in mitosis in which mitotic spindles microtubules from the opposite poles, attach all sisters. Metaphase and the anaphase are the two phase that pull apart towards the poles.  

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.