Which condition had the greatest impact on the emergence of new species in Earth's history? A. continental drift
B. mass extinction
C. adaption
D. convolution

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

c. movement because i took the test and it lets me review my answers