Which of the following is a unit of primary productivity?

The graphic presentation of various aspects of ecosystems are in the form of pyramids. When such a presentation is made …

Which of the following is the driving force of an ecosystem?

<div>The diagram below represents a biomass pyramid.</div><div>Which statement concerning the energy i…

Desert can be converted into a lush green land by planting</h2></div>

Which of the following elements have only the sedimentary type of nutrient cycle?</h2></div>

Which one of the following is the correct sequence of a grassland food chain?

The phosphate by weathering of rocks firstly becomes available to which organisms?