Yes, right after they mate.
They do not. They eat their mate. Black Widows are poisonous, so be careful!
They mate with female Black Widows, and since the male knows that mating with the Black Widow will ultimately lead to his death by cannibalism, the black widow technically commits suicide just for the Black Widow spider to live and pass on.
i don't know so don't ask me
No they do not. They are not able to produce silk.
No, black widows need to mate in order to produce fertilized eggs that will develop into viable offspring. Without mating, the eggs will not be fertilized and will not hatch into spiderlings.
Black widows feed on their so-called "In other words, the females mate with a male and after she is pidersure the eggs will hatch, she eats the other unfortunate male spider. I dunno what the males eat.
the female praying mantis is famous for eating the male after mating that's life
yes they do creepy right?
No. After killing her mate, the female black widow must live on afterwards to lay the eggs.
They will do both. Both. They will first mate, and then the female will kill the male.
When black bears urinate it has an odor that female black bears find attractive.
By smell. The female will go into the estrus and she will attract a mate by putting an odor that males can smell.