Well all animals are known for their characteristics so are placed in specific groups that match with their characteristics. Hope this helped :)
In the natural world, limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations.
arsenic
Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).
Your answer can be found on quizlet, Brainly won’t let me comment the answer. Just copy+paste :)
The answer is A because it is not formed from decaying marine animals.
