Mention main difference between primary and secondary succession.

What do you mean by succession ? Give one difference between Primary and Secondary succession. Describe process of succession on bare rock.

State two differences between primary succession and secondary succession.

Difference between primary and secondary lymphoid organs.

What are differences between primary succession and secondary succession?

Mention one difference between carcinoma and sarcoma.

differentiate between primary and secondary sewage treatment.

Define ecological succession. List any two characteristics of it. Distinguish between primary and secondary succession.