Which method is not typically used to protect endangered species?

The method that is not typically used to protect endangered species is urban development. While urban development refers to the expansion and construction of cities and towns, it often leads to habitat destruction, fragmentation, and loss of biodiversity. This can have detrimental effects on wildlife populations, including those of endangered species, as their natural habitats are altered or destroyed, limiting their ability to thrive.

In contrast, captive breeding programs, national parks, and seed/sperm banks are all recognized conservation strategies. Captive breeding programs aim to increase the population of endangered species in controlled environments before potentially reintroducing them into their natural habitats. National parks serve to protect habitats and create safe environments for wildlife, ensuring that endangered species have the space and resources they need to exist. Seed and sperm banks are essential for preserving genetic diversity, which is crucial for the longevity and adaptability of species over time.