Based on usability, Energy Resources are classified into _____
A. primary, secondary and tertiary resources
B. primary and secondary resources
C. primary, secondary, intermediate and tertiary resources
D. primary, intermediate and secondary resources
Answer:D
Based on usability, Energy Resources are classified into _____
A. primary, secondary and tertiary resources B. primary and secondary resources C. primary, secondary, intermediate and tertiary resources D. primary, intermediate and secondary resources