The two important processes involved in lithification of sedimentary rocks are compaction and cementation.
Fresh sediment is usually loose material filled with open spaces or pores filled with air or water. Lithification serves to reduce this pore space and replace it with solid mineral material. The main processes involved in lithification are compaction and cementation.
Compaction compresses the sediment to a smaller volume by packing the sediment particles more tightly, removing water from the pore spaces, or by reducing the pressure at the sediment particle contact points. Cementation involves filling the pore spaces with solid minerals that are either deposited from solution or allow particles of existing sediment to grow into the pores.
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Nitrogen (N), nonmetallic element of Group 15 [Va] of the periodic table. It is a colourless, odourless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter. Boiling point: −195.8 °C (−320.4 °F)
Atomic number: 7 has five electrons in its outer shell, so it is trivalent in most compounds. Nitrogen is important for plant growth and can be 'fixed' by lightning or added to soils in fertilisers. A colourless, odourless gas. Nitrogen is important to the chemical industry. It is used to make fertilisers, nitric acid, nylon, dyes and explosives.
Answer:
the answer is A
Explanation:
The Pacific, Atlantic, Indian, Southern, and Arctic oceans are all combined to make the global ocean
Answer:
Some of the external processes that have an impact on landforms are: Denudation: Denudation is a process where the wearing away of the surface of the earth is caused due to moving water, by ice, by wind, and by waves, leading to a reduction in elevation and in relief of landforms and of landscapes. Weathering and Erosion are parts of denudation.
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Answer: True
Explanation: There are some microorganism tend to spoil the food and produce the bad odor, spoilage etc in the food which may lead to disease like food borne disease.This disease leads to the serious health conditions or sometimes death.Example of such bacteria are-Serratia, Lactobacillus etc. These microbial organism infect the food and thus lead to food borne disease . So,the statement given is true.
