Oil reserves • English Conversation Questions

What are oil reserves and why are they important?
Which countries have the largest oil reserves?
How are oil reserves estimated and calculated?
What factors can affect the size of oil reserves?
Are there any new discoveries or advancements in technology that can increase oil reserves?
How long are current global oil reserves expected to last at current consumption rates?
What are the environmental implications of extracting oil from reserves?
How do oil reserves impact global geopolitics and international relations?
What are the challenges in accessing and extracting oil from deep-sea reserves?
How do oil reserves impact the global economy and energy markets?
Are there any alternative energy sources that could replace the need for oil reserves in the future?