Extraction data says how much of a resource is taken from nature. Consumption data says how much is used. They are different measures, and mixing them up gives wrong conclusions.
This lesson sits inside natural resources and energy choices. Read it together with comparing energy sources fairly.
How do I tell which one a table shows?
Ask three questions before you read any number. What is the title? What does the column heading say? What is the unit?
Extraction words are mined, produced, harvested, output and yield. Consumption words are demand, use, consumed and per person. If the heading is unclear, say so in your answer instead of guessing.
Worked example: two countries and one metal
The numbers here are made up for illustration. The table shows a metal in thousand tonnes for one year.
| Country | Extracted | Consumed |
|---|---|---|
| Country P | 900 | 250 |
| Country Q | 40 | 380 |
Country P extracts 900 − 250 = 650 thousand tonnes more than it uses. That surplus can be exported or stored.
Country Q consumes 380 − 40 = 340 thousand tonnes more than it extracts. That gap must come from imports or from stock.
The two countries reverse roles. A student who reads only the first column would say Q is poor in this resource and P is wealthy. A student who reads both can say P is a net supplier and Q is a net user.
The mistake that loses marks
A common error is to write “Country Q uses very little of the metal because its figure is 40”. The figure of 40 is extraction. Consumption for Q is 380.
| Step | Wrong | Right |
|---|---|---|
| Identify the column | Assumes the first number is use | Reads the heading: extracted |
| Compare | Q uses less than P | Q extracts less but consumes more |
| Conclusion | Q does not need the metal | Q depends on imports of about 340 thousand tonnes |
This matters because questions usually ask about dependence, trade or damage to the environment, and each one needs a different column.
Which column answers which question?
Match the question word to the measure. The table below gives a simple guide.
| If the question asks about | Use |
|---|---|
| Damage at mines or wells | Extraction |
| Reliance on imports | Consumption minus extraction |
| Living standards and energy demand | Consumption per person |
| How long reserves may last | Extraction and known reserves |
Reserves are a third kind of data. Neither extraction nor consumption tells you how much is left, so never claim it from those two alone.
Check yourself
Country R extracts 120 thousand tonnes of tin and consumes 45 thousand tonnes. Country S extracts 15 thousand tonnes and consumes 60 thousand tonnes. Which country depends on imports, and by how much?
Answer
Country S consumes 60 and extracts 15, so the gap is 60 − 15 = 45 thousand tonnes. S depends on imports or stock for that amount.
Country R extracts 120 and consumes 45, so it has a surplus of 75 thousand tonnes available to export.
The table cannot show how much tin remains in either country, because no reserves column is given.
What to study next
Practise explaining where a resource is found in explaining a resource distribution from geological evidence. Then try the graph evidence and fair-comparison lab on your own tables.
For a teacher to watch how you read a table and fix the slips as they happen, see online one-to-one Geography tuition.