-
alivapriyada
- Master | Next Rank: 500 Posts
- Posts: 146
- Joined: Fri Jun 25, 2010 3:42 am
- Thanked: 3 times
- Followed by:1 members
- GMAT Score:560
Modern-day snakes are believed to evolve from four-legged lizards, but scientists were divided over whether that phase of evolution occurred on land or in the sea; the recent discovery of fossils of a land-dwelling snake with two legs provides new information for the ongoing debate.
A. evolve from four-legged lizards, but scientists were
B. have evolved from four-legged lizards, but scientists are
C. evolve from four-legged lizards, but scientists are
D. have evolved from four-legged lizards, but scientists were
E. be evolving from four-legged lizards, but scientists were
please explain between B and D
A. evolve from four-legged lizards, but scientists were
B. have evolved from four-legged lizards, but scientists are
C. evolve from four-legged lizards, but scientists are
D. have evolved from four-legged lizards, but scientists were
E. be evolving from four-legged lizards, but scientists were
please explain between B and D
