<u>Answer</u>:
All of these are the most important source of of nitrogen that can lead to eutrophication of aquatic ecosystems
<u>Explanation</u>:
Eutrphication is process where the amount of nutrients in the aquatic system increases. The two major source of nutrients or minerals that causes eutrophication is Nitrogen and Phosphorus. The nitrogen or Phosphorus promotes the growth of phytoplanktons. These phytoplanktons covers the surface of the aquatic system thereby leading to decrease in the amount of oxygen in the system. The runoff from the agricultural lands contains the particles of fertilisers used for the crops.Usually those fertilizers like Urea are made up of Nitrogen and phosphorus. Also the sewage water too contains nitrogen in it.
Cellular junctions: by connecting cells to their neighbors
Receptors: allowing cells to respond to chemical messages
Answer:
Explanation:
Respuesta:Presentan una gran variedad de peligros, estos dependen de que tipo sean los residuos contaminantes, ya que varían en muchas características como los tóxicos, patogénicos, etc.
Como se puede observar existen muchos tipos de basuras y con diferentes características diferentes que llegan a variar por su peligrosidad u toxicidad.
The correct answer is I and III only.
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