-Biological diversity or biodiversity encompasses the variety and abundance of plants, animals and microorganisms as well as the ecosystems and ecological processes to which they belong. Biodiversity is usually considered at three levels, genetic diversity, species diversity and ecosystem diversity. Genetic diversity is the total genetic information contained in the genes of individual organisms.
-Species diversity refers to the variety of living organisms. Ecosystem diversity relates to the enormous diversity of habitats and biotic communities, as wells as to variety of ecological processes within ecosystems (McNeely and others, 1990). Remarkably little is known about species diversity in quantitative terms.
-Estimates about of total number of species on earth range from 2 million to 100 million of which less than 1.5 million have been named and only a small fraction of these have been considered for their economic value (Reid, 1992). Reid and Miller (1989) have estimated that 5 to 10 percent of these species are presently being lost each decade.
marto answered the question on March 20, 2019 at 11:01
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Briefly explain the two types of natural resources.
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Briefly explain the two types of natural resources.
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Outline the solutions to wetlands problems in Kenya.
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Outline the solutions to wetlands problems in Kenya.
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List the Causes of wetland problems in Kenya.
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List the Causes of wetland problems in Kenya.
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Outline the problems facing wetlands in Kenya.
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Outline the problems facing wetlands in Kenya.
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Define the term wetland.
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Define the term wetland.
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List the categories of the types of biogeochemical cycles.
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List the categories of the types of biogeochemical cycles.
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Describe Ecosystem stability models.
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Define the term Consumers /heterotrophs.
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Define the term Primary productivity.
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Define producers /Autotrophs
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Explain the Ecosystem structure.
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Explain the species interactions within an ecosystem.
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Elaborate on the concept of an Ecological niche.
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Define the term climax ecosystem.
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Explain the term secondary succession.
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Explain the term primary succession.
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Define the term succession.
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Define the term succession.
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Explain two elements of nutrient cycle.
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List the characteristics of the biogeochemical cycles.
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List the characteristics of the biogeochemical cycles.
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Define biogeochemical cycles
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Define biogeochemical cycles.
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