is to manage the blood circulation to the heart muscle. The Left main
coronary artery (LMCA) distributes blood to the left side of your heart
muscle and the Right coronary artery (RCA) distributes blood to the right
atrium, right ventricle, sinoatrial (SA) and atrioventicular (AV) nodes, which
controls your heart rhythm.
Three scientists are credited with the development of cell theory. Matthias Schleiden observed that all plants were made of cells; Theodor Schwann observed that all animals were also made of cells; and Rudolf Virchow observed that cells only come from other cells.
Plants use carbon to live, just like humans use oxygen. It's a virtuous cycle sine humans breathe oxygen and expel carbon, and plants "breathe" carbon and expel oxygen.
If plants weren't there to "breathe" the carbon, it would just sit in the world, and build up in the atmosphere.
Answer:
Nitrifying bacteria such as Nitrosomonas play an important role in providing nitrogen to plants and limiting carbon dioxide fixation. They are found widely distributed in soil or water, where there are large amounts of ammonia, such as lakes or streams into which treated and untreated sewage is pumped.
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