What is the outermost layer of earth called (10.2)?

Because its government strictly controls its economy, north korea has a economy. a. command b. mixed c. traditional d. free market

Explain how earths tilt and revolution around the sun affects weather and climate

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.