Isotopes and plough: what they have in common

1. Step 1. Isotopes — is used in — Uranium. Uranium-235 and uranium-238.
2. Step 2. Uranium — is material for — Nuclear icebreaker. The fuel is uranium.
3. Step 3. Nuclear icebreaker — is a kind of — Icebreaker. An icebreaker.
4. Step 4. Icebreaker — uses — Wedge. The bow rides up onto the ice and crushes it.
5. Step 5. Wedge — is used in — Plough. The ploughshare parts the soil like a wedge.

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