The speed of a sound wave depends on properties of the medium. occurs when a sound wave moves at an angle from one medium to another in which its speed is different. A. Diffraction
B. Interference
C. Refraction
D. Resonance

Ireally don’t know

The answer is as follows in the photo

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.