The worlds tallest mountain peaks is located in which country.

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.

Can someone plz me i really need it the pics are down below

Which of the following is a challenge to democracy shared by both brazil and mexico?