Catégorie : Echange

• Internet.

• Microprocessor.

• Robot.

• Semiconductor.

• Technology.

• Supercomputer.

• Transistor.

• World Wide Web.

• Earth (planet).

• Earthquake.

• Erosion.

• Gemstones.

• Geology.

• Glacier.

• Hurricane.

• Ice Ages.

• Igneous Rock.

• Lightning.

• Meteorology.

• Mountain.