Select the five stages of the nitrogen cycle. desalinization

ammonification

nitrification

exhalation

assimilation

denitrification

absorption

exclusion

fixation

extension

1) Nitrogen fixation

2) Nitrification

3)Assimilation

4)Ammonification

5)Denitrification

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Explanation:

In general, the nitrogen cycle has five steps:

   - Nitrogen fixation (N2 to NH3/ NH4+ or NO3-)

   - Nitrification (NH3 to NO3-)

   - Assimilation (Incorporation of NH3 and NO3- into biological tissues)

   - Ammonification (organic nitrogen compounds to NH3)

   - Denitrification (NO3- to N2)

source: https://www.fondriest.com/news/nitrogencycle.htm

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

answer; the correct answer is conflict- related aggression; +