Keystone species deserve protection because they</h2></div>

Last stage of plant succession is</h2></div>

Some of the nutrient cycles are labeled as below. <br> Sulphur cycle (A), phosphorus cycle (B), …

Which of the following representations shows the pyramid of number in a forest ecosystem? </h2></div&g…

The term ecosystem is derived from the Greek word Oikos meaning.</h2></div>

Though the pyramid of energy is always upright, what decreases at successive trophic levels from producers to consumers?

<span>Which of the plain community have greatest biomass?<br> </span></h2></div>

Which among the following is not a functional unit of the ecosystem ?</h2></div>