Which of the following geographical features is not shared by the united states and canada? a. the great lakes region b. the great plains c. the rio grande d. the rocky mountains

The correct answer is - C. the Rio Grande.

The United States and Canada share multiple geographical features, including the Great Lakes, the Great Plains, and the Rocky Mountains, but the Rio Grande River is not one of those that are shared between these two vast countries.

The Rio Grande is a river that is actually shared by the United States and Mexico. This river starts its flow in Colorado, continuing in New Mexico, forming a little bit of the federal border between New Mexico and Texas, and than forming the whole US-Mexico border (between Texas and Mexico, not all of it). The river ends its flow in the Gulf of Mexico.

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.