<span>Not only does the central engine of active galaxies and quasars require a black hole, Accretion disk of matter is also needed to provide the energy radiated.
</span>Dust, other stellar debris, and gas that has come near to a black hole<span> but fallen into it yet forms a flattened band of spinning matter around the event horizon called the </span>accretion disk<span> (or </span>disc<span>).</span>
Answer:
1. An objective that must be completed.
2. Secede means to break away from something or someone.
3. An area of land set aside for occupation by North American Indians or Australian Aboriginal people.
Explanation:
Answer:
Water conservation
Explanation:
Water conservation includes all the policies, activity and procedures that are needed to sustainably manage the water resources of any nation. Water conservation may for any locality include waste management, proper disposal systems, sewage treatment other strategies that aim at water conservation include rainwater harvesting in the area so water can be reuse in difficult conditions. Wastage of water from all means should be checked at all costs. Water should be collected in aquifers and judiciously used.
<span>Metamorphic rocks different from igneous or sedimentary rocks in that they are not directly created in their present form. Instead, metamorphic rocks take them basis from other types of existing, already in place, which are then acted upon by geological forces over extreme periods of time to turn into this final rock type. Most specifically, those forces are A. heat and pressure.</span>
France, Spain and Greece are not examples of countries where the North and the South differ greatly: they have all experienced economic problems recently, but this was not specific to the Southern areas of their countries. .
The correct answer is Italy: there is a big difference between the North and the South of Italy, including a cultural difference.