Cotton and multistage rocket: what they have in common

1. Step 1. Cotton — is material for — Glider. Covered with cotton fabric.
2. Step 2. Glider — has part — Wing. Wings.
3. Step 3. Wing — is part of — Space Shuttle. It landed like a glider.
4. Step 4. Space Shuttle — is a kind of — Reusable rocket. The Shuttle was the first reusable spacecraft: it landed like a plane.
5. Step 5. Reusable rocket — evolved from — Multistage rocket. The first stage returns.

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