Their value as life forms can never be re-created once they are extinct. It is important to be able to study the genetic make-up of various species in order to understand the evolution of new species. The usefulness of various plant and animal species for food and medicine is another reason for preserving biodiversity. A final argument for preserving biodiversity is the fact that all organisms are interrelated. It is often not until a species is extinct that people realize its importance to the ecosystem.
Wetlands provide habitat to many species of microorganisms , plants , and animals .
It is hard to miss the blooming cattails, buzzing insects, and flocks of waterfowl that commonly live in wetlands. Although a home to many living things, wetlands offer a challenging life to their inhabitants. The wetlands provide organisms with food, shelter, and a place to rest, meanwhile organisms provide many services that are important to the functions of wetlands. For example, many microorganisms and plants break down and remove toxins and excessive nutrients from the water. Wetlands plants also produce oxygen and serve as food for some of the animals.