Question 18 (2 points) Which of the following is NOT detected by chemoreceptors of the brain, aorta, and
carotid arteries?
O a) glucose levels
Ob) )
pH level
c) O2 level
d) CO2 level

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many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

can i get the brainliest pls

explanation:

idk im sorry.