It provides nutrients plants need to grow.Soil Layers Soil develops in layers. The top layer consists mostly of humus. It is called topsoil. The next layer down is called subsoil. Subsoil contains more rock par
What is metamorphic rock? What type of rock is gneiss? How does sedimentary rock form into metamorphic rock? What is the single most characteristic feature of sedimentary rocks? Do sedimentary rocks have layers? What are intrusive igneous rock bodies called? How do detrital sedimentary rocks form...
For these creatures to become oil it was necessary that they should be imprisoned between layers of rock for an enormous length of time. The statement that oil originated in the sea is confirmed by a glance at a map showing the chief oilfields of the world; very few of them are far dist...
Nij: Scissors are so sharp though, and they're made of metal. That feels tougher than rock. Kids: Because it smashes scissors. Kids: Because they're harder than scissors or paper. Kids: But I think rocks can break real scissors. Nij: Yeah, rocks are so strong. Austin and Monty have...
And that creates distinct layers of soil as far down as the rock underlying the soil. And the materials that dissolve easily in water can get lost completely if the water carries them horizontally out of the soil and into rivers. Now, of course, new mineral and organic material will be de...
Get ReadyWhat's inside our planet? Read and find out!ReadThe Earth's LayersAre you able to identify what's beneath your feet? Do you thinkit might just be dirt or rocks? Although the earth might seem ike onesolid mass, it's actually made up of four very different layers. Theselayers...
It's easy for geologists to see when the asteroid hit when they examine rock layers; in rocks around the world dating to the end of the Cretaceous period 66 million years ago, there's a thin layer of clay enriched with iridium, an element rare on Earth but common among space rocks, a...
The rock in the lithosphere mostly remains solid and floats above the molten rocks of the asthenosphere. Answer and Explanation: Learn more about this topic: Layers of the Earth | Overview, Diagram & Temperature from Chapter 4/ Lesson 10 ...
We can see geologic evidence of biomineral production in what are called stromatolites.Stromatolites look like wavy layers of sedimentary rock. But they're really fossils—fossils of the waste from microbial mats. Microbial mats are vast colonies of one-celled organisms … that were once the most...
The rock and sediment there had a similar composition to the iridium layers, and the scientists suggested the depression, called the Chicxulub crater, was caused by the impact of an asteroid. Researchers believe the other anomalies spotted across the globe were caused by scattering debris when the...