The Decline in Approximately 70% of the World's Bird Species

question 100

Multiple Choice

The decline in approximately 70% of the world's bird species is particularly alarming to scientists because

• A) This is the first time any bird species have been threatened with declining numbers.
• B) It is not caused by any human activities that scientists can determine.
• C) Only land birds are affected, while water birds seem to be maintaining normal population numbers.
• D) Birds are excellent environmental indicators.
• E) Birdwatching now generates a significant portion of tourist dollars in some countries.

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Definitions:

Garbage Collector

A component of the runtime environment responsible for automatically freeing memory by collecting and disposing objects that are no longer in use.

Sentence.length()

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Sentence.substring()

A method in Java that extracts and returns a new string that is a part of the original string, starting from a specified index to the end or between specified indices.

Writing Output

The process of displaying or sending out data from a program to a device, such as a screen or file.