Standing water, in the form of a lake/swamp, is called:

Which of the following is NOT a biogeochemical cycle?

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

Plants and animals that live on land are called

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.

Which of the following is correct sequence of ecosystem in order of decreasing productivity?