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The Tragic Extinction of the Dodo Bird

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Questions and Answers

What led to the extinction of the dodo bird?

Hunting by humans, dogs, and pigs (correct)

Competition with other bird species for food

Climate change on the island of Mauritius

Disease outbreak among dodo population

What is mentioned as a natural cause of extinction in the text?

Overpopulation of the species

Introduction of new predators by humans

Changes in climate (correct)

Decrease in food resources due to human activities

What percentage of species that ever lived on Earth are now extinct?

60%

85%

99.9% (correct)

75%

What does the text suggest is necessary for a species to avoid extinction?

Producing more new individuals through reproduction than are lost through death Signup and view all the answers

What is highlighted as a factor that could lead to the loss of a species?

Changes in climate Signup and view all the answers

What is mentioned as a contributing factor to the extinction of many animals?

Human intervention Signup and view all the answers

What is emphasized as a reason for the dodo bird's extinction?

Inability to adapt to new predators and changing environment Signup and view all the answers

Why are mass extinctions considered to be very special events?

They happen very rarely in Earth's history. Signup and view all the answers

What is the main consequence of the extinction of just one species in an ecosystem?

It has a ripple effect on many other species. Signup and view all the answers

Why are extinctions caused by human intervention more frequent?

Due to activities such as mass destruction of forests and overfishing. Signup and view all the answers

What happened when wolves were hunted nearly to extinction in the U.S.?

Prey populations grew out of control, affecting plants and songbirds. Signup and view all the answers

Why did the decrease in songbirds lead to an increase in insect populations?

Due to the reduced predation on insects. Signup and view all the answers

How do human activities like damming of rivers and introduction of foreign species impact ecosystems?

They disrupt the natural balance of ecosystems. Signup and view all the answers

What is the significance of the disappearance of one species of bee?

It affects the plants pollinated by those bees and the animals that eat those bees. Signup and view all the answers

Why are mass extinctions and human-caused extinctions a cause for concern?

They disrupt the interconnectedness of nature and have lasting effects on ecosystems. Signup and view all the answers