It is the study of the universe's origin,evolution, structure, and fate.

It is composed of a great variety of igneous,metamorphic, and sedimentary rock.

It occupies about 84% of Earth’s Volume.

It is the first organism created during the Precambrian time.

In this Era, the fundamental forces were finally separated and ordinary particles started to form.

In this Era, the universe consisted of plasma of hydrogen nuclei, helium nuclei, and free electrons.

In this Era, the universe consisted of a mixture of neutral atoms and plasma to form protogalactic.

He is Greco-Egyptian mathematician, geographer,astrologer, and astronomer, popularized the geocentric model.

The inner core of the Earth is mostly composed of            .

Volcanoes that have not erupted or have nonvolcanic activity for a very long time is classified as            .