It is nitrogen dioxide.
And the o should be capitalized
Answer: Well the answer is D, you also said it, you're supposed to ask questions.
Explanation: That's what this website is.
Answer: The major causes of World War II were numerous. They include the impact of the Treaty of Versailles following WWI, the worldwide economic depression, failure of appeasement, the rise of militarism in Germany and Japan, and the failure of the League of Nations.
Answer:
3. If you buy a new cell phone, your opportunity cost is the time you could spend talking on the phone.