Consider the following statements
1. Evolution is a process of differentiation and integration.
2. It describes a series of related changes in a system.
3. It involves more intrinsic change not merely in size but in structure also.
4. It is a continuous process.
Which one of the above statements is correct?
1
1, 2 and 3
2
1, 2 and 4
3
1 and 4
4
All of these