Each tip (sp 1-4) represents a different species of ant. Species 1 is the outgroup. Of species 3 and 4 possessed a Thymine a nucleotide position 45, while species 1, and 2 possessed an Adenine, then what kind of character is the A nucleotide at position 45?A. Convergent. B. Homoplasious. C. Derived. D. Ancestral.

Explanation:

Derived kind of character is the A nucleotide at position 45.

Derived character:  Derived kind of character is one that evolved in the lineage and  leading up to a clade and that sets members of that clade apart from other individuals

Example of a derived character:  the loss of a tail, a trait that first appeared in an ancestor of apes and man.

it would be c. xylem.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.