Spider web in the context of "Web-shooters"

Spider-Man is a superhero in American comic books published by Marvel Comics. Created by writer-editor Stan Lee and artist Steve Ditko, he first appeared in the anthology comic book Amazing Fantasy #15 (August 1962) in the Silver Age of Comic Books. Considered one of the most popular and commercially successful superheroes, he has been featured in comic books, television shows, films, video games, novels, and plays.

Spider-Man is the secret identity of Peter Benjamin Parker, who was raised by his Aunt May and Uncle Ben in Queens, New York City, after the death of his parents. Lee, Ditko, and later writers had the character deal with the struggles of adolescence and young adulthood. Readers identified with his self-doubt and loneliness. Unlike previous teen heroes, Spider-Man was not a sidekick nor did he have a mentor. He would be given many supporting characters, such as his Daily Bugle boss J. Jonah Jameson; friends like Harry Osborn and Flash Thompson; romantic interests like Gwen Stacy, Mary Jane Watson, and the Black Cat; and enemies such as Doctor Octopus, the Green Goblin, and Venom. In his origin story, Peter gets his superhuman spider-powers and abilities after he was bitten by a radioactive spider. These powers include superhuman strength, speed, agility, reflexes and durability; clinging to surfaces and ceilings; and detecting danger with his precognitive "spider-sense". He sews a spider-web patterned spandex costume that fully covers his body and builds wrist-mounted "web-shooter" devices that shoot artificial spider-webs of his own design, which he uses for both fighting and "web swinging" across the city. Peter initially used his powers for personal gain, but after his Uncle Ben was killed by a burglar that he could have stopped but did not, he learned that "with great power comes great responsibility", and began to use his powers to fight crime as Spider-Man.

The Cretaceous Terrestrial Revolution (abbreviated KTR), also known as the Angiosperm Terrestrial Revolution (ATR) by authors who consider it to have lasted into the Paleogene, describes the intense floral diversification of flowering plants (angiosperms) and the coevolution of pollinating insects (especially anthophilans and lepidopterans), as well as the subsequent faunal radiation of various frugivorous, nectarivorous and insectivorous terrestrial animals then at the lower food web levels such as mammals, avialans (early birds and close relatives), squamate reptiles (lizards and snakes), lissamphibians (especially frogs) and web-spinning spiders, during the Cretaceous period.

After the K-Pg extinction event devastated the Mesozoic terrestrial ecosystems and wiped out nearly all animals weighing more than 25 kg (55 lb), the survivors among these smaller animals that thrived during the KTR recovered first to reoccupy the ecological niches vacated by the extinction of non-avian dinosaurs and pterosaurs, and therefore became the dominant clades of the Cenozoic terrestrial faunas. Flowering plants also quickly became the mainstream florae during the Cenozoic, replacing the previously more prevalent gymnosperms and ferns.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another. (Cohesion refers to the tendency of similar or identical particles and surfaces to cling to one another.)

The forces that cause adhesion and cohesion can be divided into several types. The intermolecular forces responsible for the function of various kinds of stickers and sticky tape fall into the categories of chemical adhesion, dispersive adhesion, and diffusive adhesion. In addition to the cumulative magnitudes of these intermolecular forces, there are also certain emergent mechanical effects.

Structures built by non-human animals, often called animal architecture, are common in many species. Examples of animal structures include termite mounds, ant hills, wasp and beehives, burrow complexes, beaver dams, elaborate nests of birds, and webs of spiders.

Often, these structures incorporate sophisticated features such as temperature regulation, traps, bait, ventilation, special-purpose chambers and many other features. They may be created by individuals or complex societies of social animals with different forms carrying out specialized roles. These constructions may arise from complex building behaviour of animals such as in the case of night-time nests for chimpanzees, from inbuilt neural responses, which feature prominently in the construction of bird songs, or triggered by hormone release as in the case of domestic sows, or as emergent properties from simple instinctive responses and interactions, as exhibited by termites, or combinations of these. The process of building such structures may involve learning and communication, and in some cases, even aesthetics. Tool use may also be involved in building structures by animals.

Ambush predators or sit-and-wait predators are carnivorous animals that capture their prey via stealth, luring or by (typically instinctive) strategies utilizing an element of surprise. Unlike pursuit predators, who chase to capture prey using sheer speed or endurance, ambush predators avoid fatigue by staying in concealment, waiting patiently for the prey to get near, before launching a sudden overwhelming attack that quickly incapacitates and captures the prey.

The ambush is often opportunistic, and may be set by hiding in a burrow, by camouflage, by aggressive mimicry, or by the use of a trap (e.g. a web). The predator then uses a combination of senses to detect and assess the prey, and to time the strike. Nocturnal ambush predators such as cats and snakes have vertical slit pupils helping them to judge the distance to prey in dim light. Different ambush predators use a variety of means to capture their prey, from the long sticky tongues of chameleons to the expanding mouths of frogfishes.

A mesh is a barrier made of interlaced strands of metal, fiber or other flexible or ductile materials. A mesh is similar to a web or a net in that it has many interwoven strands.

Spider silk is a protein fibre or silk spun by spiders. Spiders use silk to make webs or other structures that function as adhesive traps to catch prey, to entangle and restrain prey before biting, to transmit tactile information, or as nests or cocoons to protect their offspring. They can use the silk to suspend themselves from height, to float through the air, or to glide away from predators. Most spiders vary the thickness and adhesiveness of their silk according to its use.

In some cases, spiders may use silk as a food source. While methods have been developed to collect silk from a spider by force, gathering silk from many spiders is more difficult than from silk-spinning organisms such as silkworms.