humus

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Earth from space. Full-hemisphere views of the Earth showing Hurricane Linda at its peak approaching Baja California on 1997 September 11.

What Is Earth’s Velocity?

Tilled farmland. (farming, dirt, soil conservation)

Could We Lose All the Soil on Earth?

Solar system illustration. (planets; sun)

Why Are Planets Round?

Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles

Why Is Pluto No Longer a Planet?

Astronomical Observatory of the Mojon del Trigo. Long exposure using the star trail technique. Sierra Nevada National Park, in the province of Granada, Andalusia.

Is Earth Going to Change the Direction in Which It Rotates?

Discover

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Statue of Nostradamus

Nostradamus and His Prophecies

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

New Zealand. Political/Physical map. Includes locator.

Where Is “Old Zealand”?

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

humus: Related Content

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Topics

humic acid fulvic acid moder mor mull soil clay duricrust soil liquefaction horizon cryoseism What Causes Soil Erosion?Vertisol Spodosol Gelisol Histosol

Dig Deeper: More Articles That Discuss This Topic

soil: Chemical characteristics