The most important food reserves of animals and plants are</h2></div>

Which of the following pyramid may be upright or inverted?

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

Who replaces the rooted-floating angiosperms in a hydrarch succession?

Complete the world puzzle.<br> Down<br> 1.Species on the verge of extinction.<br> 2.A book carrying in…

Choose the correct statement about ecological succession.</h2></div>

Imagine a barren land where once existed a forest. Due to deforestation and fire in that forest, all the species got ext…

Explain primary productivity and the factors that influence it. Describe how do oxygen and chemical composition of detri…