Ecosystem Test ...

Which one is more permanent ecosystem? 

Cycling of elements in any ecosystem is called as

The utilization of elements and compounds in nature and their subsequent return to the environment is called

Biogeochemical cycling means cycling of 

Which one of the following atoms often limit the primary productivity of an ecosystem? 

As energy is passed from one trophic level to another, the amount of usable energy?

Who coined the term ecosystem?

Which of the following is an example of secondary succession?

In an ecosystem, the population of

The phosphorus cycle differs from those of carbon and nitrogen as well as those of sulphur, oxygen and hydrogen in that it lacks