Males have a (much) longer urethra.
Your second statement is only an approximation, it's a semi-truth.
The same reason you nibble on a female's butt.
Hummingbirds do not form breeding pairs, and females provide all parental care.
No, females cannot be Freemasons. There is no reason to believe that any well-known female entertainers have any connection with Freemasonry.
While the act of intercourse can help produce milk in female, milk is not the direct result of intercourse. Milk is produced in females when they become pregnant.
It depends on what kind of flower you're talking about. There is no reason that one of the sex organs would always be longer than the other.
That's not true. Boy rabbits kill boy rabbits, for territory, and for mates................ Emroxy Female rabbits will also kill male rabbits and other females, for the same reason, territory.
The main reason why females are now required to take the NSTP is because like males, they are students also. The new rule begins with incoming female freshman in 2014.
These animals are monomorphic. This means that both the male and female look alike. There is no real reason why they do this but it is still true.
The greatest difference is in size. The male elephant seal can be three to four times the size of the females. Also the males elephant seal has a conspicuous nasal wattle while the female has none. Other difference are apparent in other species of seals but that can be somebody else's turn.
The sting of bees and wasps is a modified ovipositor (egg laying tube), an organ that only females would have. For this reason males don't have stings.
Guppies are a community fish and are best kept in odd numbered groups with more females than males; for example, a group of 3 guppies with 2 females and 1 male. The reason for a higher female to male ratio is because males will fight with each other for matting rights to the females.
The females aren't usually aggressive, but if a male doesn't like the female for any reason, or just isn't ready to breed, he may kill the female. They should only be together under supervision. The male tends to the young, so if the breeding attempt is successful, the female should be removed immediately to prevent the male from killing her so she won't eat the babies.