The process of breaking down organic matter by micro organisms is called

Which of the following is the correct sequence of phases of Biotic succession ?

Plants and animals that live on land are called

In mycorrhizal association, the advantage of plant is:

The species which are in danger of extinction are known as?

With reference to lichens, which of the following statements is/are correct? 1. Lichens are very good indicators of pollution. 2. Lichens grow well in polluted areas.