Which one of the following is not a natural resource?</h2></div>

Intermediate community between pioneer and climax communities is called as</h2></div>

What is the dark amorphous organic matter rich in cellulose and lignin that is highly resistant to any microbial action …

Which of the following explains stable ecosystem?</h2></div>

In primary succession on rocks, the pioneer species are usually</h2></div>

What are pioneers?

Name the following.<div>Inert gases in the air.</div></h2></div>

Primary productivity depends upon.</h2></div>