Ask Charloutte you idiot. Wilbur knows where she is.
Spiders make unique webs because they do not want other spiders coming into their webs. They have a unique shape, design, and scent to keep other away.
When ever they want to . But some do not make webs
orb spiders
trapdoor spiders
yes.
NO
spiders do not build geometrical shape webs
yes they do
spiders make webs
If by "redback spiders" you mean the kind of widow spiders that grow in Australia, they make the same kind of three-dimensional tangled filament webs that all the member of their Family make. Some other kinds of spiders make orb webs, sheet webs, etc.
no, but SPIDERS spin WEBS.
Interestingly enough, webs are made by both caterpillars and spiders. Tent caterpillars create web-like nests in trees that resemble tents. These silken nests protect them from predators, and also allow them to feed on the leaves of the tree. Spiders also make silken webs. These are typically closer to the shape most often associated with webs. Most spider use their webs to trap their prey and eat.