Mouldboard e syringe: o que têm em comum

1. Passo 1. Mouldboard — faz parte de — Plough. It turns the furrow over.
2. Passo 2. Plough — evoluiu de — Hoe. The plough mechanized loosening the soil with a hoe.
3. Passo 3. Hoe — evoluiu de — Stone tool. Neolithic hoes of stone and antler.
4. Passo 4. Stone tool — evoluiu para — Needle. Bone needles with an eye are part of the Palaeolithic toolkit.
5. Passo 5. Needle — faz parte de — Syringe. A hollow needle.

Abrir Evothings