The answer would be A. Methane
The immune system is the bodies defense against invaders and is located in all body tissues with concentration in the mucosal surfaces and skin.
The f° -f^1 complex in the mitochondrial structure helps it
Answer:
its either community or ecosystem
hope this helps!
Explanation:
Term Meaning
Community All the populations of all the different species that live together in a particular area
Ecosystem All the organisms that live in a place, along with their physical environment
