Final answer:
Spiders' ability to spin webs is an example of instinct, an unlearned and natural behavior specific to their species, unlike behaviors that need to be learned or are motivated by external rewards.
Step-by-step explanation:
Spiders spin intricate webs without being taught by other spiders. This is an example of a instinct. An instinct is a species-specific pattern of behavior that is unlearned and arises naturally in all animals of a given species. This behavior is innate, meaning animals like spiders are born with the knowledge of how to spin webs. These intricate webs are used for catching prey and are a crucial part of a spider's survival.
In contrast to innate behavior, there are other types of behavior such as learned behaviors which result from environmental conditioning. Moreover, motivations can be internal, known as intrinsic motivation, which is based on internal feelings rather than external rewards, or external, known as extrinsic motivation, which involves external incentives or rewards like money. An example of extrinsic motivation would be someone mowing a yard for payment.
Overall, innate behaviors like the spider's web spinning are critical for survival and ensure that essential behaviors are performed without the need for prior learning or instruction, which could be risky or impossible for some species.