Where in the Tree of Life will current organisms be located that are most closely related to the common ancestor of all life on Earth?
A) at the branch between animals and plants
B) very close to the root
C) at the branch between Archaea and Eukarya
D) very far from the root
Question 2
Europa is most likely made of
A) pure water ice
B) rock and water ice
C) rock and iron
D) pure rock