Answer:
Symbiosis and metabolic cooperation.
Explanation:
Symbiosis is a term called for bacteria that live in symbiosis with another organism or with each other, as we can see here there is a tow bacteria living in the same place (gut), one attached to the surface of the gut and another one synthesize ATP which can be used by other bacteria which made both of them benefits from a metabolic reaction that made by one bacteria.
Answer:
It is necessary to separate oxygenated and deoxygenated blood separate in mammals and birds to maintain their body temperature. Also, if they both are mixed, the blood will get impure and it would be difficult for the heart to supply impure blood. We also can't live with impure blood so we most probably will die.
It is when their is sort of a dent somewhere on your body, dimples are usually found on the face, and sometimes you may only have a dimple on one side of your face
There are 2 of them :-
1) Phagocytes
2) Macrophages.
These WBCs attach themselves to disease causing pathogens & then engulf them resulting in the destruction of the pathogens.
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Hope it helps!
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