An elastic wave in the earth produced by an earthquake or other means.
What would happen? The ecosystem would remain stable because the red-tailed hawk would be replaced by increasing populations of elf owls as apex consumers. Food web is the network of different food chains operate in any ecosystem. A food chains consists of producer and different consumers. Apex predators (top carnivores) are top consumers. In a given image of food web of a desert ecosystem, red-tailed hawks are an apex consumer. If red-tailed hawks are removed from the given food web, the populations of elf owls will increase due to unavailable their predator and elf owls will become apex consumers and the ecosystem would remain stable.
The Pyrenees are a mountain range in the western part of Europe. This mountain range is a natural boundary between the Iberian Peninsula and the rest of Western Europe.
This mountain range has formed as part of the Alpine orogenesis. The Alpine orogenesis has been triggered by the movement of Africa toward Europe, so the pressure created between the African and Eurasian tectonic plates has managed to lift up the land and create mountains, including the Pyrenees.
The Pyrenees are considered as young mountain range, and their formation is still not ended, but instead they are still growing in size and elevation.
These mountains make up the border between the nations of Spain, on the south from them, and France, on the north of them. There is one very small nations located on the mountains themselves, that being Andorra.
