Answer:
The three major mountain ranges of the USA are:
- The Rocky Mountains,
- the Sierra Nevada;
- the Appalachian Mountains.
At 20,300 feet high, Mount McKinley (Alaska) is the tallest mountain in the US.
Explanation:
Answer:
A. In undisturbed rock layers, the youngest rocks are on the bottom.
C. If one rock contains pieces of another, the rock containing the pieces is older than the pieces.
Explanation:
Relative dating is a form of dating rocks in which past events in geologic records are put their proper order without necessarily knowing their absolute ages. There are several principles that helps in relative dating of rocks. These principles are:
- Principle of superposition of strata
- Law of original horizontality
- Principle of lateral continuity
- Principle of inclusion
- Principle of fossil and fauna succession
Option A and C are false statements of principle of superpositon of strata and principle of inclusion.
A. In undisturbed rock layers, the youngest rocks are on the bottom.
According to the principle of superpositon of strata, "the oldest sedimentary rock layers are usually at the bottom and the youngest on the top".
C. If one rock contains pieces of another, the rock containing the pieces is older than the pieces.
This is a false statement of principle of inclusion, the principle states that "inclusions found in a sedimentary rock are older than the rocks that contains them". Inclusions are fragments or pieces of other rocks that are found in a rock. These inclusion are believed to be older than the rocks they are found in.
Answer:
Breathing – It is the physical process, through which all living organisms, including plants, animals and humans inhale oxygen from the outside environment into the cells of an organism and exhale carbon dioxide back into the atmosphere.
Decomposition: It is one of the natural and most important processes in the oxygen cycle and occurs when an organism dies. The dead animal or plants decay into the ground, and the organic matter along with the carbon, oxygen, water and other components are returned into the soil and air. This process is carried out by the invertebrates, including fungi, bacteria and some insects which are collectively called as the decomposers. The entire process requires oxygen and releases carbon dioxide.
Combustion: It is also one of the most important processes which occur when any of the organic materials, including fossil fuels, plastics and wood, are burned in the presence of oxygen and releases carbon dioxide into the atmosphere.
Rusting: This process also requires oxygen. It is the formation of oxides which is also called oxidation. In this process, metals like iron or alloy rust when they are exposed to moisture and oxygen for an extended period of time and new compounds of oxides are formed by the combination of oxygen with the metal.
Explanation: The Stages
Stage-1: All green plants during the process of photosynthesis, release oxygen back into the atmosphere as a by-product.
Stage-2: All aerobic organisms use free oxygen for respiration.
Stage-3: Animals exhale Carbon dioxide back into the atmosphere which is again used by the plants during photosynthesis. Now oxygen is balanced within the atmosphere.
It would be correlation because correlation is a mutual relationship or connection between two or more things.
By weakening and fracturing rock, weathering processes release nutrients and improve subsurface permeability. It is helpful to limit the physical attributes of materials produced by weathering inside the crucial zone in order to better understand these processes.
The permeability, strength, and seismic anisotropy of foliated rocks can be measured geophysically, whereas the first two have effects on hydrology and geomorphology. Characterizing weathering-dependent changes in rock fabric with depth may have a variety of implications because each of these types of anisotropy is connected to rock fabric.
The key points are:
- In the critical zone, seismic surveys of weathered material reveal seismic anisotropy magnitudes that can reach 36% and that change with depth.
- The strike of foliation and fracture planes found in bedrock coincides with the fast direction of wave propagation in weathered materials.
- As bedrock is exhumed toward the surface, in-situ weathering processes probably intensify the anisotropy already existing in the rock.
To know more about weathering refer:
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