1.2.2 Threats to Biodiversity

• Order the three main levels of biodiversity from most specific to most general.

  1️⃣ Species Diversity

  2️⃣ Genetic Diversity

  3️⃣ Ecosystem Diversity
• Genetic diversity refers to the range of genetic traits within a species.


  True
• The conversion of prairies into farmland is an example of habitat loss due to agriculture.


  True
• Climate change is a major threat to global biodiversity
• Climate change can lead to increased extinction risks for species unable to adapt.


  True
• Climate change leads to shifts in species ranges and population declines
• The warming and acidification of oceans is destroying coral reef ecosystems.

  True
• Invasive species often have higher growth rates and adaptability
• What is a major consequence of invasive species introduction on native species?

  Increased extinction risk
• What is the definition of biodiversity according to the study material?

  Variety of life on Earth
• Match the level of biodiversity with its description:

  Species Diversity ↔️ Number and abundance of species

  Genetic Diversity ↔️ Range of genetic traits

  Ecosystem Diversity ↔️ Variety of habitats and processes
• Deforestation, agriculture, urbanization, and mining are primary causes of habitat loss
• What does biodiversity refer to?

  Variety of life on Earth
• Biodiversity is crucial for a healthy and functioning planet
• What does species diversity measure?

  Number and abundance of species
• What does ecosystem diversity refer to?

  Variety of habitats and processes
• Habitat loss is the destruction or degradation of natural environments, leading to a reduction in biodiversity
• What is one consequence of mining on ecosystems?

  Habitat pollution
• Match the impact of climate change with its effect on biodiversity:

  Rising Temperatures ↔️ Shifts in species ranges

  Extreme Weather ↔️ Population declines
• What is a major threat to global biodiversity according to the study material?

  Climate change
• How does climate change affect genetic diversity?

  Reduces genetic diversity
• What are invasive species and how do they affect biodiversity?

  Compete with native species
• Order the ecological processes disrupted by invasive species:

  1️⃣ Food webs

  2️⃣ Nutrient cycling

  3️⃣ Ecological balance
• Invasive species can have a more devastating impact on biodiversity than habitat loss in some cases.

  True
• Biodiversity includes three main levels: species diversity, genetic diversity, and ecosystem diversity
• What is habitat loss and how does it affect biodiversity?

  Destruction of natural environments
• What are the effects of habitat loss on species populations?

  Decline in population, extinction
• Habitat fragmentation is a consequence of habitat loss.


  True
• Habitat loss leads to a reduction in biodiversity.

  True
• One effect of habitat loss is the decline in population due to loss of food and shelter
• What is one effect of climate change on species diversity?

  Shifts in species ranges
• Invasive species can outcompete and displace native species.


  True
• Human population growth leads to increased demand for resources
• What is the definition of biodiversity?

  Variety of life on Earth
• What does biodiversity refer to at all levels?

  Variety of life on Earth
• Species diversity refers to the number and abundance of different species in a given area.


  True
• Primary causes of habitat loss

  1️⃣ Deforestation

  2️⃣ Agriculture

  3️⃣ Urbanization

  4️⃣ Mining and Resource Extraction
• Habitat fragmentation occurs when large habitats are broken into smaller, isolated patches.

  True
• What is the primary effect of habitat loss on biodiversity?

  Reduction in biodiversity
• Rising temperatures can force species to migrate or risk extinction.


  True