Three minutes to talk about popular science topics:
On summer evenings, I like to wander the leafy paths and admire the cobwebs hidden in the corners. They are like delicate handicrafts, showing the magic and wonder of nature. Spider webs, a structure that is easily overlooked in everyday life, are actually an ingenious trap and a tool for spiders to hunt.
The structure of a spider's web is complex and orderly. The radial rays extending outward from the center form the skeleton of the net, while the spiral is the warp and weft of the net. These lines have different lengths and densities for different species of spiders. For example, the web of a round-web spider is perfectly rounded, while the web of a crab spider is in the shape of a long strip. The arrangement and construction of these lines were carefully designed by the spider.
Spider webs are designed not only for predation, but also to embody the intelligence of creatures and their ability to adapt to their environment. Spiders use the specific structure of their webs to attract and capture their prey by observing their prey's behavior and Xi. For example, some spiders will hang some small bait or simulate the body of an insect on the web to attract flying insects. These lures are usually designed in a specific shape and color to model the insect and thus lure the prey closer.
Another wonderful thing about a spider web is its toughness and elasticity. Although these nets may look fragile, they are actually very tough and resilient. This is because spiders use a special filamentous substance to weave their webs. These filamentous materials are highly strong and elastic, allowing the webs to both withstand the struggles of their prey and quickly reset when the predator touches the web.