Answer:
I'm pretty sure it gets through these joint type things that connects the cave to the surface
Explanation:
Hope this helps:)....if not then sorry for wasting your time and may God bless you:)
Answer: 
Explanation:
We are asked to multiply 1 nano sec with 1 km/sec.
The conversion used from nano second to second
1 nsec = 
The conversion used from km to meters:
1 km = 1000 m

Putting the values we get:

Therefore, the given conversion is 
<span>
A parallelogram is an object that has four sides and its opposite sides are parallel and are the same size.
A trapezoid is an object with four sides and only one pair of opposite sides are parallel the other pair is not.</span>
The Soviet Union downplayed its severity after the Chernobyl disaster happened.