Answer:
none
Explanation:
all i could see was blue sky
I don’t understand the question
A physical map, it shows elevation, mountains, and rivers (Physical Features).
The answer is Accretion of material by the supermassive black holes located in the galactic cores and this is the cause of intense luminosity of the galaxies that are active like seyferts as well as quasars.Hope this is the answer and would help.