it just can okay it is nature
Neither ! Fleas will feed on any warm-blooded animal (including humans !) - Dogs will survive quite happily without fleas.. and vice-versa !
you would use a bottle and fill it with a live aquatic plant, weter fleas, a snail, and rocks for the bottom.
I have worked with native wildlife of the Chihuahuan Desert for many years and I can guarantee that fleas survive in the desert.
they can't because the fleas would go under the door anyway
Yes. Although fleas will often bite humans, they are unable to survive indefientely from our blood alone. It is in essence like us trying to live solely on water. Without a valid food source, no animal is able to breed. This is the same for fleas.
you would use a bottle and fill it with a live aquatic plant, weter fleas, a snail, and rocks for the bottom.
well, fleas live on blood, so its possible
Daphnia is a multicellular crustacean, commonly known as a water flea. Water fleas are not really fleas at all, though they are called fleas.
Sand fleas are small creatures which live on beaches and feed on tidal litter. They are unrelated to human fleas and would not survive for very long on the human body or in human clothes. They are only named sand "fleas" because they jump.
shrimp does not eat water fleas they eat plankton just like whales.
Daphnia belong to the Cladocera group. They are one of the several small aquatic crustaceans commonly referred to as water fleas.
Fleas on a cat are probably either dog fleas or cat fleas (these are two different species, but despite the name, either can survive on either a dog or cat ... or for that matter on other mammals). Both of them can and will bite humans.