Paraguay and uruguay are similar in many ways except in their a) large number of people living in cities b) export of cash crops c) past political repression d) use of the río de la plata

D) use of the Rio de la Plata

Explanation:

Uraguay and Paraguay are two nations located in South America, and they have lot of similarities between them. One big difference though is that Uruguay is coming out on ocean waters, while Paraguay is landlocked. Uruguay uses the Rio de la Plata as the most important place for its ports, thus for trading globally, while Paraguay is not able to do so as it doesn't have access to the Rio de la Plata.

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.