2

Question 1

The primary, but not only, process responsible for the modifications that occur in organisms over geological time is

Answer 1

Natural selection

Question 2

The vast branching tree of historical relationships for all known species that live or ever have lived

Answer 2

All of the above :

Connects evolutionary history to the current diversity of life on earth; is a map that reflects the process of descent with modification; is known as a phylogenetic tree