Scientists have watched the formation of tornadoes and have determined that this kind of wind shear and instability usually occurs where?

A) within a mesocyclone
B) ahead of a cold front and low pressure system
C) when a warm front is overcome by an arctic front
D) behing a high pressure system moving across the country

mercury

explanation:

mercury is the least dense because of its size

the answer is c. according to past decisions, free speech is not unlimited.

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.