What is giant bird in the universe?
a. giant teretorn
b. ostrich
c. eagle
d. mute swan
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Ithink it's called as sexual reproduction. there 2 types of it , internal and external. internal .

Answer:

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. 

^_^