Question

What central idea do these text details help build? Complete the chart.

Detail
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Future 3-D printers may reduce shipping costs by using soil and recycled materials.

3-D printers can save money by producing tools quickly and cheaply.

3-D printers could one day help astronauts eat well in space by printing fresh meals.
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Central Idea
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Answer bank

3-D printing is difficult but worth learning.

3-D printing can help make space exploration easier.

3-D printing involves using many materials.

3-D printing works better on Earth than in space.

Answer 1

Central idea: 3-D printing can help make space exploration easier.

How the details support it:
- Using soil and recycled materials could reduce the need to ship supplies to space.
- Producing tools quickly and cheaply lets astronauts fix and build what they need on-site.
- Printing fresh meals would improve astronauts’ ability to eat well during missions.