Spiders need to live is water, food, and air.
No. There is no need. Spiders hatch fully armed and prepared.
Spiders need shelter as well as humans do. That just happens to be in your house.
Yes, but there is no need.
Yes, all species of spiders need water to survive.
Yes, because
It is not a question.
Spiders don't feed their babies with milk. Baby spiders get their feed by themselves catching small insects and don't need mother's care.
Spiders need/use venom to paralyze their prey so there is no struggle. Thus, the spider has an easy meal.
you need to get it checked out if it hurts
they eat insects like flies, and they help us.
Well, female mosquitos do, as they need the protein and iron. But no spiders (that come up in search, anyway)