Question

the walt disney company is the largest fireworks consumer in the world. some fireworks at disneyland are launched using compressed air instead of gunpowder, compressed air creates fewer flames and makes the fireworks more accurate. compressed air can be used for fireworks, because/but/so it is not necessary. normal fire requires oxygen to burn, because/but/so it would be impossible to light a fire in outer space. however, fireworks do not completely rely on oxygen, because/but/so they could technically go off in outer space. that being said, the fireworks would not be very large or satisfying because/but/so there wouldnt be enough oxygen in outer space to fuel them for long.

Explanation:

1. First blank: The sentence explains why compressed air is used instead of gunpowder for accuracy, so "because" is the correct conjunction to show the causal link.
2. Second blank: The statement contrasts normal fire's oxygen requirement with the impossibility of outer space fire, so "so" is correct to show the resulting conclusion.
3. Third blank: The sentence introduces a limitation of outer space fireworks despite them technically being able to work, so "because" correctly shows the causal reason for the unsatisfying performance.

Answer:

1. because
2. so
3. because