Why Do Spiders Spin Webs?

Answer

Not all types of spiders build webs. However, for those spiders that do, the web's main function is to help the spider catch bugs. Many web's silk strands are sticky which helps them catch any bug that flies into the web. Spiders catch bugs as this is what they eat.
1 Additional Answer
Spider spin webs to catch bugs so that they can eat them. They use their webs to climb up or down things and to have an area to lay and hatch their eggs.
Q&A Related to "Why Do Spiders Spin Webs"
The main reason spiders spin webs is to trap their prey for dinner. It also holds their prey immobile unitl they feel like munching on it.
http://answers.ask.com/Science/Nature/why_do_spide...
1. Examine the organs the spider uses to create silk for its web. In a spider's abdomen is an organ which takes protein and creates liquid silk. Each spider has between one and four
http://www.ehow.com/how_2067047_spin-spider-web.ht...
They secrete their web spinning silk from their abdomen and use their back legs to manipulate it into a web.
http://wiki.answers.com/Q/How+does+a+spider+spin+a...
Not all spiders spin webs, but most do. The webs can be spun into many different shapes, and they are used to protect eggs, catch insects for food, or move a spider through the air.
http://www.answers.com/topic/how-do-spiders-spin-w...
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