Impact of Wildlife on Ecosystems and Economies
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Questions and Answers

Which of the following is NOT a benefit of biodiversity mentioned in the text?

  • Contributing to air and water pollution (correct)
  • Offering cultural and aesthetic benefits
  • Providing new food sources
  • Affecting climate stabilization

What is one of the benefits of biodiversity related to wild plants?

  • Enhancing droughts and floods
  • Leading to increased pollution levels
  • Providing genetic diversity for disease protection (correct)
  • Decreasing the resilience of ecosystems

How does biodiversity contribute to ecosystem resilience?

  • By adding instability to ecosystems
  • By reducing the ability to recover from stress
  • By increasing adaptation to change (correct)
  • By decreasing the consequences of losing a keystone species

What happened in Yellowstone National Park as a result of losing wolves?

<p>Shift in trophic levels and environmental changes (D)</p> Signup and view all the answers

Why are keystone species important in ecosystems?

<p>Their loss can lead to cascading impacts across trophic levels (A)</p> Signup and view all the answers

How can biodiversity help in controlling pests and diseases?

<p>By providing natural predators for pests (D)</p> Signup and view all the answers

Which type of pollution is caused by excessive use of plastic?

<p>Water pollution (B)</p> Signup and view all the answers

What is the main characteristic of an exotic species?

<p>Brought to new habitats by humans (C)</p> Signup and view all the answers

Why are invasive species harmful to ecosystems?

<p>They out-compete native species for resources (D)</p> Signup and view all the answers

How do native species differ from exotic species?

<p>Exotic species may be harmful, neutral, or beneficial (C)</p> Signup and view all the answers

Which human activity is associated with overconsumption of resources like deforestation and mining?

<p>Poaching and mining (B)</p> Signup and view all the answers

Which type of diversity refers to the number of different ecosystems in a region?

<p>Ecological diversity (B)</p> Signup and view all the answers

Why are populations with little genetic diversity vulnerable to environmental change?

<p>They lack the variation needed to help adapt to new conditions (A)</p> Signup and view all the answers

Which group of organisms is mentioned as the most diverse with over 1 million species?

<p>Insects (A)</p> Signup and view all the answers

Among different biomes, which biome has the highest biodiversity?

<p>Tropical rainforest biome (B)</p> Signup and view all the answers

What is the primary reason why many species have not yet been discovered?

<p>Many unknown species are small and overlooked (C)</p> Signup and view all the answers

What is the term used to describe the variety of life across all levels of biological organization?

<p>Species diversity (B)</p> Signup and view all the answers

What has caused scrubby vegetation to overgrow in some of Africa's savannas?

<p>The removal of elephants (C)</p> Signup and view all the answers

Which species has been extirpated from most of its historic range but is not yet extinct?

<p>Black rhinos (A)</p> Signup and view all the answers

How do humans contribute to biodiversity loss according to the text?

<p>By changing ecosystems (B)</p> Signup and view all the answers

What benefits do biodiversity provide to economies based on the text?

<p>Supporting local businesses and employment (A)</p> Signup and view all the answers

What is the definition of extirpation according to the text?

<p>Loss of a species from one area only (C)</p> Signup and view all the answers

Why is the recovery of the beaver population mentioned in the text?

<p>To show how human actions can restore natural habitats (A)</p> Signup and view all the answers
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