All the time
Chlamydia won't cause a man to be fertile.
if you have your period, than no.
NO
Unprotected intercourse, or not using contraception, between a fertile woman and a fertile man can lead to pregnancy.
The Most Fertile Man in Ireland - 2000 is rated/received certificates of: Finland:K-11 Iceland:12 UK:15
go to the doctor
Yes, as long as the testicle is functioning properly then you can reproduce with one testicle.
Yes, a fertile man and fertile woman can be incompatible for having a child due to various factors. These include genetic incompatibilities, issues with sperm or egg quality, hormonal imbalances, or anatomical problems such as blocked fallopian tubes. Additionally, certain medical conditions or lifestyle factors can also affect their ability to conceive, even if both individuals are technically fertile.
Any one fertile man and any one fertile woman can have a baby together. Your blood type is only important for the blood type your baby will have.
Only if you are looking through a microscope.
The overall Count will be a bit lower, but if that testicle is healthy, the man will still be fertile.
mountains are useful to man because they are rich in minerals and the water over there is fresh and it has fertile soil.