It happens when the two groups become sufficiently different and the two can no longer interbreed. A known example of speciation is the London underground mosquito where it formed a new species within the existing genus. There are examples in micro-evolution but not in macro-evolution.
Answer:
Well, first off, I live in America. In America, it is night time per se. And on the other side of the earth, it is the afternoon. Because, the earth orbits the sun. So, it changes depending on the time of day it is.
Explanation:
Xylem, which is a dead cell that carries water in only one direction: up
Answer:
b. earth was formed from a cloud of gas and dust spinning and moving some distance from the sun.
The answer to your question is ATP
