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Frog Decline and Amphibian Survival

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Questions and Answers

Why are frogs and toads becoming less common in wet areas?

Because of an increase in natural predators

Due to the toxic nature of their own secretions

As a result of the development of natural areas of wet marshland (correct)

Due to their oversensitivity to changes in the ecosystem

What is a consequence of the decline in frog populations?

A growth in human populations

A decrease in air pollutants

A rise in amphibian species

An increase in pestilent insect populations (correct)

Why are biologists concerned about the decline of frogs?

Due to their potential medical uses

As they are becoming pests in urban areas

Because they are an important food source for humans

Since it may signal a coming environmental disaster (correct)

What is a possible reason for the decline of certain frog species in rainforests?

Unknown factors, as human activity is minimal in these areas Signup and view all the answers

What is a characteristic of amphibian species?

They are extremely sensitive to environmental variations Signup and view all the answers

What is a consequence of increased air pollutants?

An irreversible damage to the environment Signup and view all the answers

What is the unusual characteristic of some Rana klepton esculenta frogs in the Netherlands?

They are changing color to yellow and/or orange Signup and view all the answers

What is the role of the ozone layer in the Earth's atmosphere?

To shield the Earth from UV rays Signup and view all the answers

What could be the reason for the survival of frogs with lighter-colored skins in a warm climate?

They are better adapted to the changing environment Signup and view all the answers

What is a possible explanation for the extinction of some amphibian species?

The depletion of the ozone layer Signup and view all the answers

What is the potential consequence of the worldwide temperature increase on frog populations?

An upset in their breeding cycles Signup and view all the answers

In what year did the 'explosion' of multi-colored frogs of the species Rana klepton esculenta occur in the Netherlands?

1995 Signup and view all the answers