You're looking at an ancient sand dune. What this means is that the place used to be like a sandy desert, similar to those in Africa. That is because the composition of sand is mostly silica, which appears in the form of quartz.
Examples of restrictions placed on studies with animal participation include: setting a cap on the amount of time the animal can “work”, provide realistic temporary home environments, ensuring consistent nourishment in the form of food and water on a time scale, allowance for social interaction with other animals, ensuring the experience is harmless, and following regulations set by the Animal Welfare Act (ACA)/ People for the Ethical Treatment of Animals (PETA)/ or another animal care and safety organization.
These restriction examples can help to ensure the health, happiness, and safety of participating animals.
Strait of Magellan! It cuts through Argentina and Chile
Over population and decrease of the population as well
