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Constants vs Variables

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Questions and Answers

Which one of the following statements is true about constants and variables in programming?

Constants can be altered during program execution, while variables cannot.

Constants cannot be altered during program execution, while variables can. (correct)

Constants and variables are the same thing.

Constants and variables can both be altered during program execution.

What is a constant in programming?

A value you type into your program wherever it is needed.

A data item whose value can change during program execution.

A named constant that is used interchangeably with the term 'constant'.

An identifier with a value that cannot be changed during program execution. (correct)

What is a variable in programming?

A data item whose value cannot change during program execution.

An identifier with a value that can change during program execution. (correct)

A named constant that is used interchangeably with the term 'variable'.

A value you type into your program wherever it is needed.

How are constants used in programming?

As literal constants that are typed into the program wherever they are needed. Signup and view all the answers

How are variables used in programming?

As values that can be changed during program execution. Signup and view all the answers

Which of the following best describes conservation biology?

The study of protecting species from extinction Signup and view all the answers

What is the interdisciplinary nature of conservation biology?

It draws on natural and social sciences Signup and view all the answers

When did the term 'conservation biology' originate as a new field?

1978 Signup and view all the answers

Who were the American biologists involved in the convening of the first international conference on research in conservation biology?

Bruce A. Wilcox and Michael E. Soulé Signup and view all the answers

What prompted the convening of the first international conference on research in conservation biology?

Concern over tropical deforestation Signup and view all the answers