I believe it’s the first option
Answer:
image so we can answer the question?
Explanation:
<span>The electron transport chain is, in essence , aseries of redox reactions that conclude cellular respiration. during these redox reactions, NAD+ is reduced,which then oxidizes an electron acceptor in the electron transport chain.</span>
An approach to systematics in which organisms are placed into groups called clades based primarily on common descent. A group of species that includes an ancestral species and all its descendants. Pertaining to a group of taxa that consists of a common ancestor and all of its descendants. It is equivalent to a clade.
Answer:
Through adaption, Darwin observed that finches beaks changed over time.
Explanation: