Answer:
Class Monogenea
This is one of the largest groups of flatworms whose members as almost exclusively parasites of aquatic vertebrates (ectoparasites).
If the element has a atomic number of forty-four then the amount of neutrons would be "fifty-seven." This element is actually called Ruthenium and it has forty-four protons, and electrons, and it has fifty-seven neutrons and you can determine this by using this equation then solve:


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Their health , medical conditions, diseases
These organisms convert nitrogen in the soil to ammonia, which can then be taken up by plants. This process also occurs in aquatic ecosystems, where cyanobacteria participate. After nitrogen has been fixed, other bacteria convert it into nitrate, in a process known as nitrification.
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