Yes
Most spiders have eight, except jumping spiders which have four
No, they have camera style eyes. Some spiders have very well developed vision and their eyes reflect that. See reviews by F. Barth, M. Land, R. Foelix and other arachnologists for details; also look at pics of Dinopis and Salticidae (jumping spiders)
The scientific name for the black jumping spider is Phidippus audax.
I really dont think that jumping spiders can kill any one
Jumping spiders are preyed upon by a variety of predators in the wild, including birds, lizards, and other spiders. These predators hunt and feed on jumping spiders as part of their natural diet.
Jumping spiders do not wear water droplets for camouflage or protection.
yes they do they have great eyesight'Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even see in color. Net-casting spiders have enormous, compound lenses that give a wide field of view and gather available light very efficiently. However, most spiders that lurk on flowers, webs, and other fixed locations waiting for prey tend to have very poor eyesight; instead they possess an extreme sensitivity to vibrations, which aids in prey capture. Vibration sensitive spiders can sense vibrations from such various mediums as the water surface, the soil or their silk threads. Also changes in the air pressure can be detected in the search for prey.
Spiders are carnivorous, they eat insects
Non-venomous spiders include the daddy longlegs, jumping spiders, and wolf spiders.
Bugs
5g
Jumping spiders do not wear hats while navigating through water.