More than 70% of world’s fresh water is contained in
Three fourth surface of earth is covered by oceans which contain 97.5% of total water. It is marine water withabout 3.5% salt content only 2.5% is fresh water which occurs on land. Most of this water (1.97%)occursas frozen ice caps and glaciers, 0.5% fresh water occursas ground water. Rivers and lakes contain 0.02%, soil 0.01% while atmosphere possesses 0.001% of water as vapours.
10% law of flow of energy in ecosystem was proposed by
Lindeman proposed the 10%law of flow of energy in ecosystem. According to this law only 10% energy passed from one trophic level to other in a food chain.
In a food chain herbivores/deer are
In simple ecosystem with grass, deer and tiger in food chain,how much amount of food available to the tiger if the grass production is one tonne ?
The animals which occupy the same trophic level are
How much portion of the PAR is captured by the plants?
Who is referred to as the farmer’s friend ?
Which one is nature’s cleaner ?
Energy flow in an ecosystem is
Which of the following is the most stable ecosystem?
2/3 parts of each is ocean here, various types of food chains form food webs. This ecosystem is most stable due to buffering action of water.