Hey there! :D
A verb phrase is a phrase that defines the action. It contains the verb in the sentence.
"walked" is the verb, so "A" Have walked, is the answer.
I hope this helps!
~kaikers
I think the answer to this question is 3 groups
Fossils can be classified by their morphology (how they look), ethologically (how they acted), and toponomically (where they are in the substrate layers) to produce phylogenetic trees. However, more recent advances in genetic technology allow us to extract DNA from more recent fossils that have not had too much breakdown of the DNA, and we can much more accurately classify species from that information, and also provide much more accurate phylogenetic analysis.
