The answer 20 X because the lengthwise of attitude microscope
how can we see small if doesn’t zoom your vision
Because low and high is a vision it can be see in objective
best time to get pregnant is 11days to 16 days.
counting from first day of last period.
this is the most fertile time.
no pregnancy is likely to occur if sex was to take place 7 days the 14th day counting from first day of last period. as egg will not be present. or 7 days before the 14th.
sperm can live up to 5 days in the right conditons .but this is on a 28 day cycle.
it is possible to have ovulation change - to any ovulation calender without notice. so proctection is always a must
few days before period is least fertile time.