During photosynthesis, the gross primary productivity is the rate of production of </h2></div>

Which one of the following representations shows the pyramid of numbers in a forest ecosystem?</h2><div class=&…

What are pioneer species? Give an example.</h2></div>

In which layer of atmosphere ozone is maximum concentrated?</h2></div>

An ecosystem is not a self-sufficient unit.</h2></div>

What is meant by a trophic level?</h2></div>

Which is not a gaseous biogeochemical cycle<span>?<br> </span></h2></div>

Nitrogen is a limiting nutrient for </h2></div>