That is the definition of a closed set.
Only if fraud is involved.
Prove to whom? You can't "prove" a negative.
A lot of countries have boundary with Bangladesh. Only two countries have boundary with Bangladesh. They are India and Myanmar.
Fracture Zones
show it. prove it. only you know the answer to how to do it.
closed shop
No, the roller coaster is not the only example of a closed energy system.
plate boundry has four different parts. # conservative boundary. # constructive boundary. # destructive boundary. # collision boundary.
a closed, flat figure is a polygon. But it is only a polygon when it is not round.
if an electric circuit has potential difference. Electricity will flow only if an electrical circuit is closed.
He closed all the banks and only reopened those with enough money.
The least dangerous plate boundary is typically considered to be a divergent boundary, where plates are moving away from each other. This type of boundary usually results in mild earthquakes and volcanic activity.