Answer:
0.003034 s
1.035 m
4.5 m
Explanation:
 = frequency of the tone = 329.6 Hz
 = frequency of the tone = 329.6 Hz
 = Time period of the sound wave
 = Time period of the sound wave
we know that, Time period and frequency are related as 

 = speed of the sound in the air = 341 ms⁻¹
 = speed of the sound in the air = 341 ms⁻¹
wavelength of the sound is given as 

 = speed of the sound in the water = 1480 ms⁻¹
 = speed of the sound in the water = 1480 ms⁻¹
wavelength of the sound in water is given as 

 
        
             
        
        
        
<span>The last option.
Plants absorb carbon dioxide from the atmosphere, water from the soil and other nutrients also from the soil - salts containing nitrogene, potassium, sulphur, etc. They use water and carbon dioxide to produce sugar through photosyntesis.
Decomposition is the reaction that converts any organic compound back into inorganic compounds - water, carbon dioxide and salts containing nitrogene, potassium, sulphur, etc. So it's basically the opposite.
So photosyntesis uses carbon dioxide as a reactive and take it from the atmosphere, whereas decomposition generates carbon dioxide as a product and releases it to the atmosphere.</span>