I think it is Sulfur Dioxide (SO2) and Nitrogen Oxides (NOX).
As you travel from the North Pole toward the equator, you would expect to see tundra; grasslands; tropical rain forest. The correct option among all the options that are given in the question is the first option or option "a". I hope that this is the answer you were looking for and it has come to your help.
A lot of it is media bias. You won't hear this in school but Global Warming is a true but simple concept. Most of the arguments are between jobs that non-renewable energy gives us, and planet saving renewable energy.
You would definitely not expect political stability in a state that is being annexed or which does not have a territory - rather the opposite would be true.
Both multinational and souvereign states can have a high lever of political security. However, in a multinational state one can also expect some conflicts between the different ethnic groups - therefore the best answer is "a sovereign state"
<span />
I know it might be too late, but I believe the answer is B) US research and design with mostly Asian production.
