Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the morphological species (morphospecies) concept. drag each characteristic to the appropriate bin based on the species concept(s) to which it applies. the columns are: biological, morphological, phylogenetic, morphological and phylogenetic, and all three the characteristics are: 1) accommodates asexual reproduction 2) not applicable for extinct species 3) relies on similarities of structures 4) used by scientists in classification 5) species acceptance criteria can be subjective

Biological:  2) not applicable for extinct species.

Morphological: 3) relies on similarities of structures.   The morphology studies the structures.

Phylogenetic:  based in the history of the specie

Morphological and phylogenetic : 1) acommodates asexual reproduction and 5) species acceptance criteria can be subjetive

all three:  4) used by scientists in classification

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: