Cladograms is a branching which bears a lot in common with the idea of family trees. In a cladogram what occurs at a node is a "splitting event". <span>At each </span>node<span> a splitting event </span>occurs which represents the cumulative change that happens in population over time.
The most likely answer is B because a trough is a long hollow vessel for holding liquids.
Carbon, nitrogen, oxygen, hydrogen
