Current I'm working on this ad it asks me about the graph. I need help as I've been a bit confused.

d. What do you think the point of this graph is? In other words, what is the surprising/interesting feature about it? Energy consumption for the US and China, 1990, 2000, and 2009 Million tonnes of oil equivalent Tonnes of oil equivalent 2,500 per capita 9 8 US 2,000 c............... 1,500 1,000 500 World China 1990 2000 2009 Million tonnes of oil equivalent Tonnes of oil equivalent (Left scale) per capita (Right scale) US ..... US -..." China China - World5. (20%) Explain what the above graph tells you. a. What does the y-axis represent? b. What does the x-axis represent? c. Draw an arrow to an individual dot and explain what it represents. d. What happens to the value of cars as more miles are put on them? e. Is the graph a continuous line or does it have "jumps"