D. they are all goals of sustainable design
Answer:
The answer is A different types exist
Explanation:
The oldest and most stable part of a continent the craton.
the answer would be D.
:)
Answer:
A super massive black hole contains ,a million and a billion times more mass than a stellar black hole.
They occur on the galaxies.
Explanation:
An evident one by the astronomers was the quasars, which radiate a million more times than the sun.
Evidence on the existance on supermassive black holes has beeen cited following the orbiting of the galaxy.
