Consider the following statements: Climate change may force the shifting of locations of the existing corps due to
1. Melting of glaciers.
2. Water availability and temperature suitability at other locations.
3. Poor productivity of crops.
4. Wider adaptability of crop plants.
Which of the statements given above are correct?
1, 2 and 3
2 and 3 only
1 and 4 only
1, 2, 3 and 4