Today, iron is primarily used to make __________.
Which of the following industries is especially dependent upon the production of copper?
except
Decomposition is the process by which __________ break(s) down over time.
If something is refined, it means that __________.
In 1956, while digging in the soil in the Crater of Diamonds in Arkansas, a woman from Dallas found a 15-carat diamond. She found a type of __________.
South Africa, Botswana, Canada, Australia, and Russia are important producers of __________.
except
Which of the following substances is created over millions of years from the decomposed remains of plants and animals?
Refineries turn __________ into many products, which are then used to make things like DVDs, crayons, and plastics.
Petroleum was formed from the fossilized remains of plants and animals that lived in __________ environments.
Bauxite is used to make __________.
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