Manipur, in north-east India, is not at all a matriarchy. Though mothers there are in forefront of most of the social activism, the society has always been a patriarchal. Their women power is visible because of historical reason.
The solar radiation that reaches Earth acts as its main source of energy in several ways. It warms the Earth's surface, regulating weather systems and providing a habitable environment for its lifeforms to thrive in. The sun's interactions with Earth generate raindrops, which in turn provide hydropower.
We are all exposed to natural radiation to a greater or lesser extent, and for most. 5Nuclear Energy in Everyday Life people it is the major source of radiation exposure. Background radiation is that which is naturally and inevitably present in our environment. Figure 3: Penetrating Power of RadiationFigure 4: Sources of natural radiation.