Biodiversity: The amount of biological or living diversity per unit area . It includes the concepts of species diversity, habitat diversity and genetic diversity. ... habitat diversity: the range of different habitats in an ecosystem.
What is biodiversity IB?
[IB Biology Ecology Notes] Biodiversity. Biodiversity: Biodiversity or “biological diversity” is the diversity of species, ecosystems and genes that exist on earth .
What is a biosphere ESS?
Guidance: Biosphere refers to the part of the Earth inhabited by organisms that extends from the upper parts of the atmosphere to deep within the Earth’s . crust .)
What is speciation ESS?
U6 Speciation is the formation of new species when populations of a species become isolated and evolve differently from other populations . ... Speciation will depended on: isolation of species:the process by which two populations become separated by. change of environmental.
What is biodiversity system?
The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels , from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.
What are the 4 Earth systems?
Everything in Earth’s system can be placed into one of four major subsystems: land, water, living things, or air . These four subsystems are called “spheres.” Specifically, they are the “lithosphere” (land), “hydrosphere” (water), “biosphere” (living things), and “atmosphere” (air).
Why Earth is a system?
“Earth is the only planet we know of that sustains life . ... The great circulation systems of Earth – water, carbon, and the nutrients-replenish what life needs and help regulate the climate system. Earth is a dynamic planet; the continents, atmosphere, oceans, ice, and life ever-changing, ever interacting in myriad ways.
What is importance biodiversity?
Biodiversity is important to humans for many reasons. ... Ecological life support — biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.
What are types of biodiversity?
Usually three levels of biodiversity are discussed— genetic, species, and ecosystem diversity .
Does high evenness mean high biodiversity?
Biodiversity is a measure that combines richness and evenness across species . It is often measured because high biodiversity is perceived a synonymous with ecosystem health. ... some species work together so that both can survive (called commensalism) and therefore, diverse communities can be more stable.
How do you explain natural selection?
Natural selection is the process through which populations of living organisms adapt and change . Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
What is diversity habitat?
Habitat diversity refers to the range of habitats present in a region .
What is the origin of biodiversity?
Charles Darwin [2] identified the first principle of the origin of modern biodiversity, namely that all species were linked in a single great phylogeny, or tree of life , and that all could be traced back to a presumed single original species at some distant time in the geological past.
What is biodiversity example?
Biodiversity is the variety of life . Most people recognize biodiversity by species—a group of individual living organisms that can interbreed. ... Examples of species include blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria that can’t even be seen by the naked eye.
Why is biodiversity at risk?
Much of the Earth’s biodiversity, however, is in jeopardy due to human consumption and other activities that disturb and even destroy ecosystems . Pollution, climate change, and population growth are all threats to biodiversity. These threats have caused an unprecedented rise in the rate of species extinction.
How do humans affect biodiversity?
Humans affect biodiversity by their population numbers, use of land, and their lifestyles , causing damage to habitats for species. ... Through proper education, and by demanding that governments make decisions to preserve biodiversity, the human population will be able to sustain life on earth longer.
