The cave is so dark that these nocturnal snakes that live in bat caves are essentially completely blind and deaf

Species invasions are actually a very common occurrence on a global scale. Although there are countless species of organisms on the planet, these are distributed all over the world, with some species being endemic to certain areas and not present in others, and others having a relatively wide distribution. When some species appear in places where they would not have previously existed, this is when the species may become invasive.

Most of the plants that we think are delicious have actually been artificially selected for hundreds or even thousands of years