Answer:
The change in environment
Explanation:
Because they need to adapt to live
Oxygen is the common characteristic which helps fire to burn and a flowering plant to live on earth. When oxygen combines with a suitable chemical, it releases energy in the form of heat.
Correct answer: B). The phagocytotic barrier, which is a part of innate immunity
The scenario represents the phagocytosis, which is a type of endocytosis by which the cell engulfs microbial pathogens. The main cells of the immune system that are involved in phagocytosis include macrophages, neutrophils, and dendric cells.
It is a mechanism which is used by the immune system to kill and processing of antigen that play an important role in innate immune response.
Hence, the correct answer would be option B.
Answer:
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