Answer:
None of the above.
Explanation:
The Decca system was discontinued in 2001. Loran-C replaced the Decca navigation system which was more accurate. Loran-C uses low frequency radio waves.
SONAR (sound navigation ranging) was developed in World War I for threats like submarines.
Seismic profiling uses frequencies lower than 3 to 30 Hz which is not considered as high frequency.
“During World War I, victory gardens were an example of US government propaganda aimed at conserving food.”
Answer:
#7 is self-designation by Indo-Iranian peoples in ancient times
Explanation:
Answer:
The legislative congress is made of 2 groups, the House of Representatives and the Senate.
Explanation:
