Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (genetic variability), species (species diversity), and ecosystem (ecosystem diversity) level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a … See more • 1916 – The term biological diversity was used first by J. Arthur Harris in "The Variable Desert," Scientific American: "The bare statement that the region contains a flora rich in genera and species and of diverse geographic … See more According to Mora and colleagues' estimation, there are approximately 8.7 million terrestrial species and 2.2 million oceanic species. The authors note that these estimates are … See more Biodiversity is not evenly distributed, rather it varies greatly across the globe as well as within regions. Among other factors, the diversity of all living things (biota) … See more General ecosystem services From the perspective of the method known as Natural Economy the economic value of 17 ecosystem services for Earth's biosphere (calculated in 1997) has an estimated value of US$33 trillion (3.3x10 ) per year. See more "Biodiversity" is most commonly used to replace the more clearly-defined and long-established terms, species diversity and species richness. Biologists most often define biodiversity … See more History Biodiversity is the result of 3.5 billion years of evolution. The origin of life has not been established by science, however, some evidence suggests … See more A variety of objective means exist to empirically measure biodiversity. Each measure relates to a particular use of the data, and is likely to … See more WebJan 19, 2014 · 75% of genetic diversity of agricultural crops has been lost. 75% of the world’s fisheries are fully or over exploited. Up to 70% of the world’s known species risk …

Our global food system is the primary driver of biodiversity loss

Webwe appropriately respect life on earth in its rich biodiversity. Much of the urgency for conserving biodiversity arises from our duties to other humans, as nature is instrumental to what humans have at stake in their environments. These interests directly feed into national interests and require international cooperation. But a deeper WebApr 6, 2024 · 04/06/2024. Animals, plants, fungi — biodiversity holds a treasure trove of chemicals that can be used to treat disease from malaria to cancer. But its loss is driving … china b watertown mn

The origins of modern biodiversity on land - PubMed

WebJul 18, 2024 · Date: July 18, 2024. Source: The University of Montana. Summary: Biodiversity is disappearing at an alarming rate as infectious diseases increasingly spill … WebNov 18, 2024 · By studying exceptionally species-rich adaptive radiations, like the African cichlids, scientist can learn more about how biodiversity arises and what factors are associated with it. The present ... WebBiodiversity arises from evolutionary processes. How does biological variation arise? Biological variation arises randomly and can either be beneficial to, damaging to, or have no impact on, the survival of the individual. Natural selection steps: Natural selection occurs through the following mechanism. 1. Within a population of one species ... graf seles head to head