So, on what finger do you wear a promise ring? In the USA and the UK, the ring finger (fourth finger) of the left hand holds the greatest significance; engagement rings and wedding rings are worn on this finger almost without exception.
In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
What does Endangered mean Endangered animals are basically those animals whose population is reducing at an alarming rate. This drastic reduction in numbers can be attributed to a number of things and it is therefore prudent to carefully learn about some of the possible causes of extinction. Below are just a couple of reasons that may result into wildlife extinction.