According to journalist and author joel garreau, what are the five characteristics of edge cities?

The five charactieristics are:

1.More than five million square feet of office space has to be present.

2.Over 600,000 square feet of retail space. has to be present.

3.The civillians will rise at morning and drop at afternoon.

4.The place is known as a single end destination,with all the facilities like recreation,transport,residential built within.

5.The area must look modern- not anything like a "city" 30 years ago.

Hope it helps!

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.