C. Sonography
Sonography makes use of sound waves.
Answer:
Pt 1: 
Pt 2: θ = 
Explanation:
Part 1:


imagine the "i"and the "j" with the hat




Part 2:




θ
θ
θ = 
Hope it helps
The core of a star must be at the temperature of 10,000,000 degrees Celsius for hydrogen fusion to begin.
Answer:
I don't get it?
like yhu want us to rate it or?
Explanation: