B: México and the United States share the southern border
Answer:
when animals breathe or die they give off carbon dioxide, humans when we eat and breathe we are exalting carbon dioxide that goes into the atmosphere.
A narrow eastern coastal plain traversed by many river valleys and gently sloping to the ridges of the ancient Appalachian Mountains. Route of America.
The Appalachian Mountains are a range of mountains that run along the eastern coast of North America, from Newfoundland and Labrador in Canada in the north to Alabama in the United States in the south.
The area is rich in natural resources, but the population is often poor. In addition, declining education levels and lack of public infrastructure (highways, developed cities, businesses, medical services, etc.) are deteriorating the economic situation in the region. especially in remote mountainous areas. They have pitted men against each other in sprawling clans for decades, often using murder and arson as weapons, along with ambushes, gunfights, and prearranged firefights.
Learn more about Appalachians at
brainly.com/question/1621716
#SPJ4
Russia. It is the largest country in the world. 90% of Russia is in Asia and the rest in Europe.
