What is the area in the north most parts of the earth which has extreme and year long cold weather ?!

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 is the relationship between groundwater and aquifers?

Compare nato and the eu; list 2 similarities contrast nato and the eu; list 2 differences what did you learn about nato and the eu? were you surprised by any of it? 1st answer will get brainliest