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The condition is which characteristics of atmosphere III is nitrogen-rich and oxygen-poor. Nitrogen-rich is one of the condition in which the atmosphere III characterizes. The other is oxygen-poor, is one of the condition characterizes atmosphere III. Nitrogen-rich material mostly called green because they are greenish in color. Oxygen-poor means the blood enters the RA or Right atrium or the upper chamber of the heart.
Answer:
B
Explanation:
It represents the greatest amount of cell differentiation for the newly formed organism.
Here all the organs and system get initiation and cell differentiate to form various organs.