what causes solar activity

) are the major source of power in space stations and satellites. Solar energy has the following advantages: It is a renewable source of energy. It is easily available for the major part of the year, particularly in the tropical countries. It does not cause any pollution. The re..

The ultimate cause of pollution is human activity itself. Pollution is a human contribution to nature. Science has evolved technologies and technologies have helped the human welfare. In the process, the pollution has been a part of technology and therefore a part of human..

The ultimate cause of pollution is human activity itself. Pollution is a human contribution to nature. Science has evolved technologies and technologies have helped the human welfare. In the process, the pollution has been a part of technology and therefore a part of human miser..

. Such an oncogenic transformation requires activation of the oncogenes by carcinogens. Normal cell growth is under the control of genes, which regulate cell proliferation, differentiation and survival. Alterations in these genes lead to oncogenic transformation. Cancer is caused..

In lanthanides, the nuclear charge increases by one unit at each successive element and this new electron enters the 4f-subshell. Due to the peculiar shapes of f-orbitals, there is imperfect shielding of electrons from the nuclear attraction. As a result of this the size of lanthanide atoms decrea..

It does not cause any environmental pollution like the fossil fuels and nuclear powe..

It is present everywhere. It is available in plenty. It does not cause any environmental pollution like the fossil fuels and nuclear power. Solar cells last a longer time and have low running costs. In the first half of the twentieth century solar energy wa..

It is present in abundance They have no moving parts and hence require little maintenance and work quite satisfactorily without any focusing device It does not cause any environmental pollution like the fossil fuels and nuclear power Solar cells last a longer time and have ..

Nuclear Fission and Fusion..

The Universe..