The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

✅ B. Nitrogen

Nitrogen makes up about 78% of Earth's atmosphere. Read more

✅ B. Charles Law

✅ C. Endocrinology

✅ D. peat

✅ B. Immunity

✅ D. Vitamin K

✅ E. none of these

✅ A. Oxidation