Answer:
O, Ir, H, He
Explanation:
Technically its either the first letter or the first two letters of the element. hope that helped :)
Myelin greatly speeds up action potential conduction because of exactly that reason: myelin acts as an electrical insulator! Myelin sheath reduces membrane capacitance and increases membrane resistance in the inter-node intervals, thus allowing a fast, saltatory movement of action potentials from node to node.
Hope this helps
Answer:
The limitation of phylogenetic species concept is b. Evolutionary histories are not known for all species.
Explanation:
The species that share a common ancestor and have similar traits and functions are grouped together as a result of the phylogenetic species concept. The phylogenetic species concept shows a unique evolutionary history of one organism with another of the same group. The major set back in the phylogenetic species concept is the lack of evolutionary histories for certain species. So, these organisms cannot be grouped according to the phylogenetic species concept.
B) lung , because an organism is a living thing. Humans , mold , and bacteria live . A lung is an organ in the organ system
