Which of following is/are tend (s) in ecological succession ?
1. An increase in complexity of species
2. An increase in productivity
3. An increase in community stability and species diversity
4. A decrease in nonliving organic materials.
Which of the above is/are correct?
(a) 1 and 2 (b) 1 and 4 (c) 1, 3 and 3 (d) 1, 2, 3 and 4