Answer: after a while everything would be dead
Explanation: because of no oxygen all life will simply die
As far as a threat, North Korea has been seen as such for many years (since WWII), when North Korea sided with Russia. America and its Capitalism were not fond of the Communist party, and so we have really been fighting/being concerned about Russian influence.
Historically North and South Korea have been in conflict many years before America and Russia got involved. When we did though it got worse.
Trump has done very little to resolve this, some would say he is making it worse.
AND as for any current events ask Google!
Answer:
D. In the mantle
Explanation:
The core of the Earth is extremely hot, and material in the mantle close to the core is heated
There is no picture but my the description you gave i think it would be fine as long its not loose
