Podcast
Questions and Answers
What best defines genetic diversity?
What best defines genetic diversity?
Which of the following is NOT a use of biodiversity?
Which of the following is NOT a use of biodiversity?
What is the primary consequence of habitat loss?
What is the primary consequence of habitat loss?
Which factor is a major contributor to climate change?
Which factor is a major contributor to climate change?
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Which aspect of biodiversity refers specifically to the different ecosystems present in the biosphere?
Which aspect of biodiversity refers specifically to the different ecosystems present in the biosphere?
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Which of the following is a direct benefit of biodiversity?
Which of the following is a direct benefit of biodiversity?
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What can happen to species due to climate change?
What can happen to species due to climate change?
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What primarily causes habitat loss?
What primarily causes habitat loss?
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Study Notes
Biodiversity
- Biodiversity is the variability among living organisms.
Levels of Biodiversity
1- Genetic Diversity
- Genetic diversity refers to the diversity within a species.
- It's the variation in genetic structure between individuals of the same species.
- Genetic diversity allows species to adapt to changing environments.
- Species with more genetic diversity are better able to adapt to environmental changes.
2- Species Diversity
- Species diversity refers to the variation of living species within a geographic area.
3- Ecosystem Diversity
- Ecosystem diversity refers to the variety of ecosystems present within a biosphere.
Uses of Biodiversity
- Food (vegetables, fruit, meat, milk, eggs, cheese)
- Medicine (sources for medicinal products, e.g., aspirin, morphine)
- Biological control (controlling pests using other organisms)
- Industrial materials (building materials, fibers, dyes, gums, rubber, oils, waxes, perfumes)
- Supporting ecosystem services (soil fertility, pollination, decomposition of waste, air and water purification, climate moderation)
Threats to Biodiversity
1. Habitat Loss
- Every species has a specific "home" or habitat with particular conditions.
- Disruptions to the environment can cause habitat loss and species homelessness.
- Habitat loss is the conversion of a natural ecosystem to a degraded system unable to support native wildlife.
- Construction of roads, industries, and agriculture causes habitat disruption.
- Habitat loss can lead to the disappearance of species.
2. Climate Change
- Human activities increase greenhouse gases, altering climate conditions (e.g., increasing temperatures, changing rainfall patterns).
- Climate change affects seasonal biological activities (e.g., migration, blooming, mating).
- Climate change puts species at risk of extinction.
3. Pollution
- Pollution reduces the growth and reproduction of organisms, ultimately impacting biodiversity.
4. Overexploitation
- Overexploitation of economic wild plants and animals is a major threat to biodiversity.
Conservation of Biodiversity
- Conservation involves managing human use of the biosphere to provide sustainable benefit to present and future generations.
- Two key strategies for biodiversity conservation are in-situ (on-site) and ex-situ (off-site).
1. In-situ Conservation
- In-situ conservation involves protecting organisms in their natural habitats.
- It involves protecting ecosystems through protected areas.
2. Ex-situ Conservation
- Ex-situ conservation involves conserving organisms outside their natural habitats.
- Conservation practices include botanical gardens, zoos, and seed banks.
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Description
Test your knowledge on biodiversity and its various levels, including genetic, species, and ecosystem diversity. Explore the significance and uses of biodiversity in our daily lives and the environment.
