With regard to the ecological food chain,man is a

In both hydrarch and xerarch successions,what is the characteristic outcome of the ecological changes?

Lichen is the pioneer vegetation on which succession?

Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:

An ecosystem which can be easily damaged but can recover after some time if the damaging effect stops will have:

The amount of nutrients,such as carbon,nitrogen,phosphorus,calcium,etc.,present in the soil at any given time is referred to as $..........$.