The Oxygen in the Atmosphere Developed Approximately ________ Billion Years

question 39

Multiple Choice

The oxygen in the atmosphere developed approximately ________ billion years ago.

• A)1.5
• B)2.0
• C)3.5
• D)4.5

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Definitions:

Constructor

A specialized method used to initialize new objects in a class.

Integer Object

An instance of a data type representing numerical values without fractional components.

Declaration

A statement in programming that specifies the identifier and type of a variable or function, without necessarily allocating space or defining its value.

Autoboxing

The automatic conversion that the Java compiler makes between the primitive types and their corresponding object wrapper classes.