Answer:
high-density lipoproteins?
Explanation:
I think this is the answer... but I'm not sure. if you need me to delete this, I will.
Chemical weathering by carbonation
Explanation:
Chemical weathering by the process of carbonation will cause the inscription on a marble gravestone to become more difficult to read with time.
Chemical weathering is the decomposition and decay of rocks to form sediments and soil.
- Marble is metamorphic carbonate rock.
- It is derived from the metamorphism of limestone and dolomitic rocks.
- In the presence of weak carbonic acid, it becomes soluble
- Carbonic acid is formed when atmospheric carbon dioxide combines with rain water.
- The carbonic acid dissolves the marble and washes it away in solution.
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The answer to this should be C.
Answer:
Nitrogen can be transformed into a utilizable form like NO2 by the fixation process.
Explanation:
The conversion of nitrogen into various chemical forms is described through the Nitrogen cycle. The nitrogen of atmosphere is less usable. However, it can be made usable by various interactions of complex genes that allow nitrogen conversion by different organisms.
One such interactive process is of Fixation. In this method, nitrogen is modified into ammonia by symbiotic microorganism. They have the enzyme called nitrogenase which makes the bond of hydrogen with nitrogen to make ammonia.
Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.
