ecosystems

Energy Flow - Energy is the capacity to do work. Solar energy is transformed into chemical energy by the process of photosynthesis, and is stored in plant tissue and then transformed into mechanical and heat forms during metabolic activities. The energy, in the biological world, flows from the sun ..

In nature, food chain relationships are not isolated. They are very complex, as one organism may form the food source of many organisms. Thus, instead of a simple linear food chain, there is a web like structure formed by these interlinked food chains. Such interconnected matrix of food chains is c..

Food Web - In nature, food chain relationships are not isolated. They are very complex, as one organism may form the food source of many organisms. Thus, instead of a simple linear food chain, there is a web like structure formed by these interlinked food chains. Such interconnected matrix of food ..

Biological diversity includes 3 hierarchical levels. a) Genetic diversity b) Species diversity c) Community and ecosystem diversi..

Habitat loss and fragmentation, disturbance and introduction of alien species pore greatest threats to biodiversity. Exotic species have large impacts in island ecosystems..

In nature there is always a kind of interdependence between different kinds of living organisms among themselves and also between biotic and abiotic components of ecosystem..

There is repeated eating in which each group eats the smaller one and is eaten by the larger one. Thus, it involves a nutritive interaction between the biotic components of an ecosystem..

Presence of dangerous unnatural ingredients causing imbalance in the ecosystem and health hazards to human beings and animals can be called as pollutio..

The nutrient movement goes on side by side along with unidirectional flow of energy. The nutrient movement is a cyclic movement where the nutrients revolve round with an ecosystem, hence cyclic. This cyclic movement of nutrients is also called as biogeochemical cycl..

Physical processes that shape the patterns of Earth's surface Characteristics and spatial distribution of ecosystems on Earth's surfac..