superior sensory copabilities

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with the exception of jumping spiders,most spider have rather poor sight,and can only see for short distances.this disablity which might be a great disadvantage for a hunter it is compensated for by the spider's particularly sensitve early warning system.this warning system is based upon the sense of touch the body is covered with hairs which are very sensitive to vibration.each one of the these hairs is attached to a nerve ending.vibration resulting from touch or even sound and smell stimulate these hairs.The trembling of the activites the nerve ending.the nerve then rapidly transmit the message to the brain in this way spiders become aware of even the smallest vibration.