.21 is the answer. It’s out of 100 and you move the decimal over two places to the left. 21 = .21 two places to the left
Answer:
What was the primary cause of the London Fog of 1952? B. Cold air led to heavy use of coal, and the smoke from the coal fires was trapped close to the ground by a temperature inversion. ... A floating pile of oil-soaked logs in the Cuyahoga River caught fire, and the resulting media attention led to the first Earth Day.
Explanation:
Explanation:
Question 1:
B. Increased heat and pressure may change the sedimentary rock into metamorphic rock.
In a subduction zone, sediments are usually subject high temperatures and pressures by which they change into metamorphic rocks. Metamorphic rocks are described as changed rocks.
- In a convergent zone when a plate subducts beneath another, the rock is forced into an environment where heat and pressure is elevated.
- With available water, a metamorphic change occurs leading to metamorphic rocks.
- Along a subducting rock, different facies of metamorphic transformations are observed.
- This slowly goes from low grade to high grade metamorphic transformation.
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Metamorphic change brainly.com/question/869769
Question 2:
A. Weathering and erosion.
Weathering and erosion are external processes that must have carved the canyon area from the surroundings.
- Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
- In the process of erosion, the rocks, sediments and soils are then carried away from their original position into other places.
- These processes combines and interacts to form powerful forces that causes denudation.
- The major agents here are wind, water, ice, glacier and gravity.
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Erosion brainly.com/question/2473244
Question 3:
C. Igneous rock becomes sedimentary rock.
This change is rock cycle change from igneous to sedimentary rocks. This entails the remains of pre-existing forming clasts of sedimentary rocks.
- The granite that is disintegrated by the process of weathering is an igneous rock. These are rocks that forms through the cooling and solidification of molten magma.
- The sandstone that results from this process is a sedimentary rock. Sedimentary rocks are usually derived from pre-existing rocks.
- The process of lithification and sediment compaction under significant pressure causes the sediments to transform igneous rocks.
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Compaction brainly.com/question/9131992
Question 4:
D. Clastic sedimentary rock forms from sediment, not from the remains of organisms.
The problem with the classification is that clastic sedimentary rocks are formed from sediments and not remains of organisms. Clastic sedimentary rocks are derived from pre-existing rock materials.
- Examples are sandstone, silt, gravel e.t.c
- They formed from sediments that gathers from the weathering of pre-existing rocks.
- The limestone that formed from the shells of organisms is a biochemical sedimentary rock and not a clastic.
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Formation of sedimentary rocks brainly.com/question/2769978
Question 5:
C. The grains of the rock are aligned in a layered patterns.
The best feature that shows that a metamorphic rock is foliated is the layered arrangement of mineral grains in the rock. Due to intense nature of pressure and temperature metamorphic rocks are subjected to, most their minerals are usually aligned.
- Pressure can caused the long axis of some platy minerals to form a special texture giving them a schistose foliation.
- Temperature and pressure can combine to form a sort of metamorphic foliation known as gneissic layering in which the mica domains and quartz rich domains alternate simultaneously.
- In low grade metamorphism, we can a have sort of slaty cleavage developing too.
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Contact metamorphism brainly.com/question/1970623
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