Select all correct answers. A phylogenetic tree may represent relationships among

A. populations

B. taxa at levels above species

C. species

D. genes

Option B.

Taxa at levels above species.

Explanation:

Phylogenetic tree or evolutionary tree is a diagram that shows evolutionary relationship among organisms of common ancestors base on their physical difference and similarities and genetic components.

Phylogenetic tree shows relationship among group of organisms species called taxa.

The top of the tree shows the group of descendant taxa while the nodes on the tree show the common ancestors of the descendants.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds