Answer:
O S(s) + O2(9) A, 502(9)
Answer: The answer is B.Sonar and C.Radar
Explanation:
They are both just like an echo which is the main things that uses reflected sound waves. They are basically like synonyms for echo.
= 11.371g
Hope This Helps! :]
Answer: I think it's B.
Answer: The answer is D
