Answer:
The formation of a glacial trough involves two processes abrasion and plucking. Abrasion is when pieces of debris in the glacier wear away at the rocks below, a bit like sandpaper. The sharper rocks in the ice can also cause scratches in the rocks called striations.
Explanation:
Answer:
<u>True. cover 71% of the entire earth</u>.
Explanation:
- The oceanic mass found ver the earth is well-known mass reserves of 97.3% of all waters in the world. Most Of it exists in salty forms and rest 3% is in the form of lakes and glaciated bodies as the next big reservoirs.
- They are also considered as the carbon sinks, constantly absorbing the carbon dioxide gas, the Atlantic Ocean covers an area of 82.4 km square with a volume of 323.6, followed by the Pacific Ocean, with 165.2 km area and a volume of 707.6, and the Indian Ocean has an area of 73.4 km and volume of 291.0 km cube.
- Variability is an important component of the oceanic water there is also water in the earth's mantle and is available at a temperature of 1,100 degrees celsius.
Igneous rock derives it's name from the Latin word ignis which means fire. It is formed when the magma after volcanic eruption gets cool and solidified either on the surface of earth crust or inside the earth crust. These rocks are characterized by their hardness. These rocks undergoes no chemical weathering but exhibit very low mechanical or physical weathering may occur. Therefore, hardness is the property which can be used to identify the origin of an igneous rock.
