a) Species require broader ecological tolerances to survive the harsher conditions of high latitudes. 5. (A biological community is an interacting group of various species in a common location.) Genetic diversity 2. The biodiversity prevents some plant communities from surviving when the ecosystem experiences consistent weather patterns. Biologists spend a fairly large amount of time worrying about this definition, but does it make any difference for biodiversity conservation policy, Yes, because laws such as those in the US Endangered Species Act focus on species level conservation of threatened or endangered species. Which of the following best explains the changes in biodiversity shown in the graph? Aesthetic Value. How could this be? Upvote (0) Was this answer helpful? As human populations grow, the terrestrial and aquatic ecosystems they use may be transformed by the efforts of human beings to find and produce food, adapt the landscape to human settlement, and create opportunities for trading with other communities for the purposes of building wealth. b) Lower species richness at high latitudes leads to less intense competition for resources allowing species to occupy broader ranges (i.e., Rapaport’s rule is an expected outcome of latitudinal gradients in … Consumptive use Value: These are direct use values where the biodiversity products can be harvested and consumed directly e.g. Biodiversity refers to the variety of living species on Earth, including plants, animals, bacteria, and fungi. __________________ values are concerned with the production or consumption of marketable commodities. Biodiversity is the biological variety and variability of life on Earth. The illustration above shows the wing structure of an insect.Which of the following animals will most likely have a wing structure that is very similar to this insect’s wing structure? Background Extinction rate is about 1 extension per 1 million species per year. 7. The number of tigers has plunged by 97% in the last century. https://www.britannica.com/science/biodiversity-loss, Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. Create custom Assignments. Biodiversity losses typically accompany these processes. As forests are managed for sustainability, some tree species may be lost. Biology. In addition, the seasonal rise and fall of plant and invertebrate populations (such as insects and plankton), which serve as food for other forms of life, also determine an area’s biodiversity. Chapter 9 explains the importance of US. Both the environment and individual dierences are important considerations in understanding individual employee behavior. Which section of a river usually has the steepest gradient? answer choices After an environmental stress, a genetic bottleneck may occur, which will increase genetic diversity. D. Neither I nor II. Analyze changes in population sizes and biodiversity resulting from natural causes, changes in climate, human activity, or introduction of a non-native species. Threats to biodiversity have adverse effects on the ecosystem. I would genetic diversity be an important factor to consider when investigating the biodiversity of a group of organisms? 1. A. Middle School. It is the number of different species of plants, animals, and microorganisms. What is biodiversity and why does it matter to us? Ask your question Login with google. B. Diversity helps companies attract and recruit talented employees. For biodiversity conservation, … Biodiversity is the part of nature which includes the difference in genes among the individuals of a species, the variety and richness of all the plant and animal species at different scales in space, locally in a region, in the country and the world and various types of … 1. Our editors will review what you’ve submitted and determine whether to revise the article. It explicitly recognizes that every biota can be characterized by its taxonomic, ecological, and genetic diversity and that the way the… fuel, food, drugs, fibre etc. By 2018 the biomass of humans and their livestock (0.16 gigaton) greatly outweighed the biomass of wild mammals (0.007 gigaton) and wild birds (0.002 gigaton). Such disturbances are temporary, however, because natural disturbances are common and ecosystems have adapted to their challenges (see also ecological succession). If the niches filled by a single species or a group of species are critical to the proper functioning of the ecosystem, a sudden decline in numbers may produce significant changes in the ecosystem’s structure. Habitat loss combined with hunting pressure is hastening the decline of several well-known species, such as the Bornean orangutan (Pongo pygmaeus), which could become extinct by the middle of the 21st century. Biodiversity. Even though a species is not eliminated from the ecosystem or from the biosphere, its niche (the role the species play in the ecosystems it inhabits) diminishes as its numbers fall. Group of answer choices The reaction continues to convert reactants to products, and products to reactants when the concentrations are equal , but with no net change in concentration at equilibrium. In his recent documentary, A Life On Our Planet, David Attenborough explains what we must do to reverse the damage we’ve inflicted on our planet during his lifetime. A) the total number of organisms on Earth B) the total variety of organisms on Earth C) the total size of organisms on Earth. Economic Value 5. Usually three levels of biodiversity are discussed—genetic, species, and ecosystem diversity. This is the result of both natural selection and human inventive developed over millennia. Chapter 8 describes the support the UK gives to biodiversity overseas and our special responsibility for Antarctica, the Crown Dependencies and the Dependent Territories. Biology. 1! Consider the following statement (s) related to the biodiversity hotspots in India.. Genetic Diversity. A. Which of the following best explains how environmental stressors, such as wildfires, can affect biodiversity in an ecosystem? 2013: 73), the value of biodiversity is based on its relationship to ecosystem functions, and their value of in terms of human well-being. Relative biomass on Earth. 9th - 10th grade. 4. Forest clearing, wetland filling, stream channeling and rerouting, and road and building construction are often part of a systematic effort that produces a substantial change in the ecological trajectory of a landscape or a region. Seasonal changes, such as the onset of spring, create opportunities for feeding and breeding, increasing biodiversity as the populations of many species rise. b. For example, clearing trees from a forest eliminates the shading, temperature and moisture regulation, animal habitat, and nutrient transport services they provide to the ecosystem. Which of the following statements best explains how a loss of biodiversity can result from deforestation? Palm oil production increased 900 percent in Indonesia and Malaysia between 1980 and 2010, and, with large areas of Borneo’s tropical forests cut, the Bornean orangutan and hundreds to thousands of other species have been deprived of habitat. Log in. As forests are managed for sustainability, some tree species may be lost. This quiz will test you on the same topic with twenty basic to intermediate level questions. 2. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. ecosystem is healthy when it has a variety of species? The third focal area of the 2010 framework concerns the five major threats to biodiversity: invasive alien species, climate change, nutrient loading and pollution, habitat change, and overexploitation. Join now. Which pyramid level would birds occupy if they eat insects that feed on corn? The number of animals living on the Earth has plunged by half since 1970. -The presence of one particular species indicates the presence of many other species. View solution. People, unfortunately. Our experts are building a solution for this. the ecosystem over a long period of time? B. The planet's biomass is classified by kingdom of life and other major groupings, and the size of each group's relative footprint is displayed using gigatons of carbon as the common measure. forces and motion Traditionally, ecologists have measured biodiversity, a general term for the number of species present in the biosphere, by taking into account both the number of species and their relative abundance to each other.Biodiversity can be estimated at a number of levels of organization of living organisms. At finer levels of organisation, biodiversity includes the genetic variation within species, both among geographically separated populations and among individuals within the single population. Ecosystem Services 4. Climate change is predicted to be a significant cause of extinction in the coming century. Which of the following statements best explains how a loss of biodiversity can result from deforestation? C. The plants would crossbreed with native plant species and increase biodiversity in the ecosystem. Biodiversity loss is typically associated with more permanent ecological changes in ecosystems, landscapes, and the global biosphere. D. As trees are cut down, less water vapor is released into the atmosphere. ... Changes to an ecosystem's biodiversity can have a … Murray landed his first starring role with the film Meatballs in 1979. I. It occurs within a species as well as between species. A. Use a food web to determine the effects on other populations of a disruption to one member of the web. 322 times. Biodiversity is not distributed evenly on Earth, and is richer in the tropics. More diverse ecosystems have a broader mix of species, including some that are more likely to be able to tolerate changes such as drought, floods, or other extreme environmental events. The biodiversity allows all plant communities to survive when the ecosystem experiences severe weather. In addition, a 2019 report by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services noted that up to one million plant and animal species are facing extinction due to human activities. answr. Preserving biodiversity is an extraordinary challenge that must be met by greater understanding of biodiversity itself, changes in human behavior and beliefs, and various preservation strategies. Write three reasons to expl... Write three reasons to explain why there is a greater biodiversity in tropical region of the earth. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. In contrast, biodiversity losses from disturbances caused by humans tend to be more severe and longer-lasting. 1 Answers. The world is full of different and biologically diverse ecosystems, each providing its own set of values and uniqueness. Which of the following statements explains portability in non-functional requirements? Why would this be? But environmental organisations believe that even exploratory drilling would be a serious blow to the rich biodiversity of the region. (a) Brazil (b) South Africa (c) Russia (d) India Answer. Download png. Which of the following statements explains why diversity actually makes good business sense? This particular group of mice appears to be genetically distinct subspecies and therefore would qualify for protection under the ESA. An area’s biodiversity increases and decreases with natural cycles. It is very difficult to measure insect and microbiological diversity accurately. Ans: C. GK Questions on Basic Concepts of Environment and Ecology. 21. Join now. As habitats are destroyed, animals and plants may become extinct. a temperate forest with average biodiversity that loses many types of trees due to a fire. Search. s. As habitats are destroyed, animals and plants may become extinct. It can positively affect ecological productivity and maintains a balance among all living beings. Senator Marsha Blackburn (R–TN), on Fox Business, after the president invoked the extinct hominins to criticize two Republican governors for rescinding mask requirements during the pandemic. 1. Biodiversity, or biological diversity, is a term that refers to the number of genes, species, individual organisms within a given species, and biological communities within a defined geographic area, ranging from the smallest ecosystem to the global biosphere. It enables the population to adapt to its environment and respond to natural selection. Biodiversity increases an ecosystem’s ability to withstand changes*** Biodiversity makes . Explain the transfer of energy through the trophic levels of a food web. In an ecosystem, species tolerance limits and nutrient cycling processes are adapted to existing temperature and precipitation patterns. While Earth’s biodiversity is so rich that many species have yet to be discovered, many species are being threatened with extinction due to human activities, putting the Earth’s magnificent biodiversity at risk. Unless we successfully reduce the impacts of these threats, they will contribute to the loss of biodiversity components, negatively affect ecosystem integrity and progress towards sustainable use. PLS HELP!!! As habitats are destroyed, animals and plants may become extinct. The theory of island biogeography suggests that species richness is affected by which of the following factors? (a) The areas with very few plant and animal species (low species richness) with no threatened species are called biodiversity hotspots. Fossils generally form in what kind of rock? The idea of biodiversity is most often associated with species richness (the count of species in an area), and thus biodiversity loss is often viewed as species loss from an ecosystem or even the entire biosphere (see also extinction). Genetic diversity: It refers to the variation in gene within a species. What actually causes a species to disappear? ADVERTISEMENTS: Some of the major values of biodiversity are as follows: 1. SCI COMMUN> “Neanderthals … are resilient, resourceful. (A biological community is an interacting group of various species in a common location.) He followed this with a portrayal of Hunter S. Thompson in 1980's Where the Buffalo Roam.In the early 1980s, he collaborated with writer-director Harold Ramis and starred in a string of box-office … Likewise, biodiversity loss describes the decline in the number, genetic variability, and variety of species, and the biological communities in a given area. Interactions between two or more of these drivers increase the pace of biodiversity loss. Or in the context of "a contract" :a legal document that states and explains a formal agreement between two different people or groups, or the agreement itself Which of the following environments would you expect to have the most biodiversity? This loss in the variety of life can lead to a breakdown in the functioning of the ecosystem where decline has happened. Local richness is directly proportional, but less than, regional richness. All five drivers are strongly influenced by the continued growth of the human population and its consumption of natural resources. (a) Food: A large number of wild plants are consumed by human beings as food. A common measure of this variety, called species richness, is the count of species in an area. The Areas guide provides short articles about selected areas of importance for biodiversity conservation. Can you explain this answer? Biodiversity refers to the variety of living species on Earth, including plants, animals, bacteria, and fungi. 9th - 10th grade. Some species may not able to cope with environmental changes from global warming. Conditions change faster than the organisms were able to adapt to, and, as a result, these species eventually disappeared. (a) … Log in. Which of the following best explains why an employee behaves as s/he does? Due to modern agriculture, biodiversity across many species groups is in decline. Which of the following countries has the highest biodiversity? 322 times. They maintain ecological balance and ecosystem stability. [ -best explains how a loss of biodiversity can result from deforestation. Over time, the population has a larger proportion of birds with large beaks, Why is mutation an important aspect of how Evolution occurs, Without mutations in genes, there would be no variation in traits that could be selected for, Which of the following statements about mutations and natural selection is true, Miss genetic mutations have little to no effect on an organism, Migration of organisms contribute to which of the following causes of evolution, Which of the following best describes genetic drift, A random change in the genetic makeup of a population, _____ Is the process by which geographic isolation results in the formation of multiple species from a common ancestor, Biodiversity is a measure of the diversity of Life at what levels, Which of the following groups comprises the largest group of known species on the planet, Which areas of the world tend to have the greatest species richness, Why does the Amazon rainforest generally have higher species diversity than temperate North American rainforest, The temperature has been relatively stable over long periods of time in the tropics where the Amazon rainforest is located in comparison to other areas of the world. Productive Use Value 7. -One particular species has a disproportionate effect on community biodiversity. The following dimensions of agricultural biodiversity can be identified: Evolution and Biodiversity Test Review DRAFT. Which of the following best describes the relationship between local and regional species richness? Biodiversity is defined as the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems. Which of the following is NOT one of the four major unifying themes of biology? It is a degree to which software running on one platform can easily be converted to run on another platform. Let's see if you can get them right or not. The genes of individuals within the same species can vary greatly, making some members of the same species more successful than others in certain situations. Will we rise to meet them? These include the capacity to interbreed, physical similarities, genetic similarities and others. Conserving biodiversity outside the areas where they naturally occur is known as ex-situ conservation.2. The environment is the most important consideration in understanding individual employee behavior. For example, a large droughts would have a bigger negative impact on the life in a low diversity ecosystem than it would on the life in a high diversity ecosystem. What is the snake an example of in the food chain given below? Ecological diversity . While Earth’s biodiversity is so rich that many species have yet to be discovered, many species are being threatened with extinction due to human activities, putting the Earth’s magnificent biodiversity at … Consumptive use value 6. Natural ecological disturbances, such as wildfire, floods, and volcanic eruptions, change ecosystems drastically by eliminating local populations of some species and transforming whole biological communities. C. As land is cleared for grazing, valuable topsoil can wash away more easily. Which of the following explains biodiversity? The biodiversity prevents all plant communities from surviving when the ecosystem experiences a heat wave. Solving the critical environmental problems of global warming, water scarcity, pollution, and biodiversity loss are perhaps the greatest challenges of the 21st century. Explain with the help of one example each. - wherein. Biodiversity and its conservation Questions: MCQs Test - 01, Total Questions 15 (b) Biodiversity increases from higher altitudes to lower altitudes B. -One particular species is cute enough to rally financial support for conservation measures. Products can form reactants until equilibrium is established. Which of the following describes the number of species and abundance of each species that live in a particular location? Social Value: The social value of biodiversity includes aesthetic, recreational, cultural and spiritual … Declines in genetic diversity that accompany rapid falls in population may increase inbreeding (mating between closely related individuals), which could produce a further decline in genetic diversity. A gene is a sequence of components found within what kind of molecule, If two species are members of the same class they would also have to be members of the same, The species of what organism are best characterized by genetic analysis, Which of the following statements accurately describes how traits are passed to Future Generations, Only traits that are a result of genetics can be passed down to the Next Generation, Explain what is wrong with the following statements wraps have developed long necks over many generations because they keep stretching higher and higher to reach the highest leaves on trees, Traits such as long necks are developed over many generations through the process of natural selection they are not the result of a lifetime of activity, Which of the following statements about evolution is true, Population's evolve, but individual members of the population do not, Which of the following is an example of evolutionary change, A certain population of birds the birds with the larger beaks are better able to eat the hard seeds that are abundant in their environment. Genetic diversityis all the different genes contained in all individual plants, animals, fungi, and microorganisms. Species diversity 3. Biodiversity: Fusion of two words, biological, and diversity. c. a. Updates? These birds survive and produce Offspring with large beaks. Chapter 7 explains the role of environmental awareness and education, and the contribution that can be made by all sectors of our society. As habitats are destroyed, animals and plants may become extinct. As forests are managed for sustainability, some tree species may be lost. Answer. 6. How does the current rate of Extinction compared to the background Extinction rate? We dive into these solutions and discuss how technology can combat climate change and the destruction of biodiversity. Sudden population declines may upset social structures in some species, which may keep surviving males and females from finding mates, which may then produce further population declines. Species diversity: It refers to the variety of species within a region. B. See more. Researchers estimate that the current rate of species loss varies between 100 and 10,000 times the background extinction rate (which is roughly one to five species per year when the entire fossil record is considered). 1. It explains in detail a number of recognised systems to protect, prioritise and identify areas of biodiversity importance that fall into two main categories: protected areas and biodiversity designations. C. As land is cleared for grazing, valuable topsoil can wash away more easily. It can be enhanced by using languages, OS’ and tools that are universally available and standardized. Let us know if you have suggestions to improve this article (requires login). Hunters killed 2,000–3,000 Bornean orangutans every year between 1971 and 2011, and the clearing of large areas of tropical forest in Indonesia and Malaysia for oil palm (Elaeis guineensis) cultivation became an additional obstacle to the species’ survival. C. Social Value 3. Biology. It includes organisms from Earth’s vastly different ecosystems, including deserts, rainforests, coral reefs, grasslands, tundra, and polar ice caps. Biodiversity refers to the variety of life that exists on Earth from very small to giants. Biodiversity is the variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems. A. Diversity increases an organization's retained earnings. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. Similarly, in the Encyclopedia of Biodiversity chapter on “Sustainability and Biodiversity” (Cavender-Bares et al. It would benefit the ecosystem since the plant species would serve as a food source for herbivores. Which of the following explains the term "dynamic" as applied to chemical equilibrium? 3. Biodiversity is the most precious gift of nature mankind is blessed with. Evolution and Biodiversity Test Review DRAFT. 2. Environmental Value 2. The core threats to biodiversity are human population growth and unsustainable resource use. Which of the following statements is true? 13/10/2019 03:26 AM. ! However, associating biodiversity loss with species loss alone overlooks other subtle phenomena that threaten long-term ecosystem health. Biodiversity is the total variation between all living things and can be measured to help identify species that need to be supported. Biodiversity loss, also called loss of biodiversity, a decrease in biodiversity within a species, an ecosystem, a given geographic area, or Earth as a whole. Corrections? Biodiversity, or biological diversity, is a term that refers to the number of genes, species, individual organisms within a given species, and biological communities within a defined geographic area, ranging from the smallest ecosystem to the global biosphere.
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