Choose the correct from the alternatives given.<span><br> Which one of the following organisms is t…

Explain ecological pyramids in detail</h2></div>

On which basis is the idea of productivity of an ecosystem based?

Keystone species should be protected as they </h2></div>

<div>Which gas is utilised in combustion process ?</div></h2></div>

The pioneer species in xerarch and hydrarch succession are respectively</h2></div>

____________ is a mixture of 50 - 90% of methane<span><br> </span></h2></div>

The formation of a climax community from an abandoned farm land is a an example of<span><br> </span>&l…