Answer: If we kill all the organisms in one trophic level, then transfer of energy as well as matter to next higher level will stop. It will lead to over- population at one particular level causing amongst the individuals. This would seriously disturb the food chain and can cause the collapse of an ecosystem even.
D....carbon can also form triple and quadruple bonds
<span>the function of the mucus blanket in the lungs is to filter and moisten the air.</span>