Be very careful when using the words (labels) that you see on the graph or chart. You may need to change them when writing full sentences.
Look at this chart for example:
You can't just use the words in the table like this:
- Nuclear was 30% of energy used.
- Thermal produced 20% of energy used.
You need to write something like this:
- Nuclear power was used to produce 30% of the country's energy.
- Thermal power stations produced 20% of the energy used in... (year / country).
Can you see why we need to add words when writing full sentences?
(Answer: 'nuclear' and 'thermal' are adjectives, so we need a noun like 'power' after them)