The insects have an important role in the pollination of the flowering plants. The insects acts as a carrier of the pollen grains for different flowering plants.
By "receiving chambers," I'm not sure if you mean the right atrium and left atrium or the right and left ventricles because those are also chambers within the heart that receive blood in the blood flow cycle.
The fusion of the egg cell and Sperm cell.
Nitrogen Fixation. It's the process by which atmospheric nitrogen is converted either by a natural or an industrial means to form of nitrogen such as ammonia.
Answer:
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Protein,or Carbohydrates,or,Lipids, or , nucleic acid
Explanation:
