Non-structural measures of flood disaster management in India include __________. A. Flood zonation B. Flood forecasting C. Embankment construction D. Channel improvement Choose the most appropriate answer from the options given below:
A and B only
A and B only. Flood zonation guides land use, and flood forecasting provides warning; neither requires a flood-control structure. Embankments and channel improvement physically modify flood flow and are structural measures.
In which of the following atmospheric layers ozone gas is concentrated?
Ozone layer depletion is a major phenomenon in :
By which layer of the atmosphere the ultra-violet rays are absorbed ?
The layer of very rare air above the mesosphere is called the _____________.
Air moves from the region where the air _______.