Thursday, September 10, 2009

levels

Every living organsim is in some way dependent on other organisms.plants are food for herbiorous animals ,which are in turn food for carnivorous animala.Thus ,there are different tropic levels in the ecosystem.some organisms such as fungi live only on dead meterial and inorganic matter.
Plants are the'producers'in the ecosystem,as they manufacture their food by using energy form the sun.In the forest these form communities of plant life .In the sea seaweed.
The herbivrous animals are 'primary consumers 'as they live on the producers.In a forest,these are the insects,amiphians ,reptiles,birds and mammals .The hebivorous animals include,for example ,the hare,deer and elephants that live on plant life .They graze on grass or feed on the foliage from trees.In grasslands,there are grassland,there are herbivavores such asblackbuck that feed on grass.In the semi-arid areas,there are species sucha s the chinkara or indian gazelle.In the sea,there are small fish that live on algee and other plants.

At a higher tropic level,there are carnivorous animals or 'secondary consumers which live on the herbivores.In our forests the carnivores are tigers,lwopards,jackals,foxes and wilds cars.In the sea,carnivarous fish live on other fish and marine animals.The animals that live in the sea range in size froms to gaint mammals such as the whale.

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