How do the cloud and precipitation patterns match those of the norwegian cyclone model?

Which layer surrounds the center of the earth? a: crust b: core c: mantle

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.

What does the plate tectonic theroy describe?