It is a sedimentary rock with high calcium carbonate content.

Related extras


The circumference of the Earth has already been calculated in ancient Egypt. The calculations...

Deep-sea hydrothermal vents

A hydrothermal vent is a fissure in the planet's surface through which geothermally...

How does soil form?

This lesson presents soil formation, the components of soil, and soil protection.

Milky Way

The diameter of our galaxy is about 100,000 light years; it contains more than 100...

The World of the seas

Seas and oceans cover almost three-quarters of the Earth’s surface. 97.5% of the total...

The Equatorial Climate

Az egyenlítői éghajlat sajátosságainak bemutatása.

Carbon cycle

Carbon is bound in organic substances during photosynthesis, while during breathing, it...

El Niño

Az El Niño jelensége szinte az egész Föld éghajlatára hatással van.

Added to your cart.