My best guess would be "asexual" (press "thanks" if im right to let me know)
The answer is 4.315 billion kilometers so it would be 4.315 x 10 to the 9th power if that is what is meant and Neptune is the eighth planet outward from the sun (the most distant planet from the sun) so it is a tremendous distance from the earth and would be very hard for humans to reach with such a distance.
The S phase is when a Cell's DNA is copied. This is otherwise known as mid-interphase.
hope this helps!!
