D oxygen there was no free oxygen on the earth
Answer:
natural selection is natural, selective breeding is not. Natural selection is when the best genes are passed down. Selective is when the best of an animal group are forced to mate
Explanation:
C. <span>corpus phase.
This is how the phase is
</span><span>Menstrual phase (From day 1 to 5)
Follicular phase (From day 1 to 13)
Ovulation phase (Day 14)
<span>Luteal phase (From day 15 to 28)</span></span>
There is a chance of change in colour in urine