Flow of Energy in an Ecosystem
Sun is the only source of energy in the biosphere. Every living being can get its share of energy through food only and the energy is directly or indirectly obtained from green plants only.
Lindeman
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Natural Resources and Their Types
Natural resources constitute both living and non-living resources. Non-living resources are renewable and non-renewable.
What do we consider as – Child Labour?
Children as they grow, start getting involved in the day to day activities of the family to support their parents. These children go to schools and work in the family in leisure periods. Their household activities are neither harmful nor exploitative.
Some Benefits of Eating Cauliflowers
Cauliflower is a beautiful compact snow ball like vegetable if it is white. It remains surrounded by soft and long foliage.
Food Production from Animals
The government have initiated a number of measures to increase the productivity of milch animals. It has resulted in an increase in the milk production significantly from the level of 102.6 million tonnes at the end of the tenth plan (2006 -2007) to 127.9 million tonnes at the end of the Eleventh plan (2011 -2012. The Annual Growth Rate of milk production was about 5% in 2011 -12 compared to 2010 -11.
Leaf fall and Compost making
Plants and trees shed their leaves from time to time. This happens due to a number of reasons. From some plants and tree leaves continue falling throughout the year. At the same time new leaves continue developing to compensate their number.
How does energy flow through an ecosystem?
Consumers too utilize some energy in their metabolic processes. Under these conditions some energy escapes away in the form of their body heat and some energy is wasted through excretory matter from their bodies. The rest of the energy goes into the atmosphere when top consumer dies and its body is decomposed.
Human environment interaction
man is causing serious impacts on environment. Concrete jungles do not allow rain water to enter into the gound. As such water table is falling down.
Factors Causing Population Change
There are four basic factors that cause population change in a country – Natality or the birth rate, Mortality or…
Applications, Potential and Limitations of solar energy
There are various uses of Solar Energy. Farmers in Traditional Farming Communities used to solarise fields by living them empty after a deep ploughing during summers. It killed insects and pests. Human skin synthesizes vitamin-D when exposed to sunlight for short durations. Mothers used to make their babies sleep in the sun after oiling their bodies during winters in order to keep them healthy and strong.
Positive and Negative Interdependence among Organisms in Ecosystems
Interdependence between two species through which individuals of either one or both species benefit is called positive interdependence. The benefits to the individual of any species through this relationship may be continuous or transitory, obligate or facultative. Both partners in this type of relationship may be in close contact; one may be inside some specific area or attached to the surface of the other’s body. Positive interdependence is divided into three major types: mutualism, Commensalism, and proto-cooperation.
Bioinvasion of Foreign and Genetically Engineered Species
An incident of invasion by a living species into entirely new habitat thereby threatening the existence of native species is called as bioinvasion or Biological Invasion.
