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Meaning	The part of nitrogen cycle where ammonia (NH4+) is converted into nitrate (NO3-) is called nitrification.	Denitrification is the level where reduction of nitrate (NO3-) is made into nitrogen gas (N2).
The process involves	Nitrifying bacteria like Nitrobacter, Nitrosomonas.	Denitrifying bacteria like Spirillum, Lactobacillus, Pseudomonas, Thiobacillus.
Grows slowly.	Grows rapidly.
Requires aerobic condition.	Requires anaerobic condition.
The microbes	Autotrophic.	Heterotrophic.

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When we pull a table uper side is gravity force act in thos process

Posted by Monti Rathaur 6 years, 7 months ago

CBSE > Class 08 > Science

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How do cow dung and vegetable waste change into manure? From chapter microorganism

Posted by Riya Kapoor 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Π÷€×√={¶} . 6 years, 7 months ago

Because , the presence of microbes in enviorment

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Ashish Bhardwaj 6 years, 7 months ago

microrganism decompose it

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How is iron ore extracted from iron?

Posted by Akshat Garg 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe2O3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Carbon is more reactive than iron, so it can displace iron from iron(III) oxide. Here are the equations for the reaction:

Iron(III) oxide + carbon → iron + carbon dioxide

2Fe2O3(s) + 3C(s) → 4Fe(l) + 3CO2(g)

In this reaction, the iron(III) oxide is reduced to iron, and the carbon is oxidised to carbon dioxide.

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How do vaccine works

Posted by Kavya Sharma 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Vaccines work on the principle of immunization. Vaccines help a body's immune system prepare in advance to fight infectious illnesses and potentially deadly diseases caused by infectious agents or their by-products. Vaccines ‘fool’ the immune system into developing a memory for a particular infection by putting something that mimics the microbe we want to vaccinate against, into the body.

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Where can i get key words

Posted by Rao Nishant 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Arsheen Mushtaq 6 years, 7 months ago

We also want that..??

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What is transplantation?

Posted by Reena Poddar 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Tarun Kumar 6 years, 7 months ago

1. the process of taking an organ or living tissue and implanting it in another part of the body or in another body.

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What is tha largest dam of India

Posted by Tristha Bhardwaj 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Anshika Joshi 6 years, 7 months ago

1.Tehri Dam 2.Bhakra Nangal Dam 3.Sardar Sarovar Dam 4.Hirakud Dam 5.NagarjunaSagar Dam

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What is synthetic fiber?

Posted by Aman Kumar 6 years, 7 months ago

CBSE > Class 08 > Science

4 answers

Akaljot Singh Dhanoa D 6 years, 7 months ago

Synthetic fibers are artificial

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Anubhuti Shrivastava 6 years, 7 months ago

The polymer which are prepared in the laboratories from chemicals are called synthetic fibre.

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Harjas Singh 6 years, 7 months ago

Thanks

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Devbhargav Meher 6 years, 7 months ago

Name of different components of foot with definition

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What are the platelets ?

Posted by Aarav Kaur 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Abhishek Rajput 6 years, 7 months ago

A type of blood that helps to clooting the blood

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Satyam Krishna 6 years, 7 months ago

They help the blood to clot. This blocks the flow of blood and prevents blood loss. Normal count of are 1.5 to 3 lakhs/mm

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Uses of acrylic and properties

Posted by Aastha ? 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Π÷€×√={¶} . 6 years, 7 months ago

The use of acrylic is mainly in making colourful clothes

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what is meant by manuring

Posted by Rahul Kashyap 6 years, 7 months ago

CBSE > Class 08 > Science

4 answers

Abhishek Rajput 6 years, 7 months ago

A natural product that helps to increase the fertility of soil after decompose

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Satyam Krishna 6 years, 7 months ago

Manure add to field for give nutreints to our crop. It is made up of decompostion of plant and animal waste.

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Sarfaraj Sarkar 6 years, 7 months ago

Throwing seeds by hand

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Deepankar Haldar 6 years, 7 months ago

Adding manure to the field is called manuring

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Keywords of lesson 2

Posted by Sachin Kumar 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Satyam Krishna 6 years, 7 months ago

Microorganisms: The organism that can'not be seen our naked eyes. Microorganisms divided by four class.(1)Bacteria (2)Fungi (3)Protoza (4)Algae.

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Aman Kumar 6 years, 7 months ago

What is microorganisms?

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What is the difference between metals and non metals

Posted by Jainsi Sinha 6 years, 7 months ago

CBSE > Class 08 > Science

4 answers

Akaljot Singh Dhanoa D 6 years, 7 months ago

Metals are good conductor of heat and electicity wheras non metals are bad conductors of heat and electricity

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Abhishek Rajput 6 years, 7 months ago

A natural substance that are not shiny lusture is non metal

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Abhishek Rajput 6 years, 7 months ago

A natural substace that are shiny lusture is metal

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Sachin Kumar 6 years, 7 months ago

https://www.quora.com/What-is-the-difference-between-metal-and-nonmetal

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Why it is advice not weare synthetic fiber cloth

Posted by Ataur Laskar 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Gauranshi Vashisth 6 years, 6 months ago

It is adviced not to wear clothes made up of synthetic fibre because when it comes in contact with heat it sticks to the body of the person wearing it

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Different between traditional method of irrigation and modern method of irrigation

Posted by Saurav Kumar 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Ruchir Kumari 6 years, 7 months ago

Chimpu

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What is fermentation?how is the process useful in the food and beverage industries?

Posted by Gaurav Singh 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Akaljot Singh Dhanoa D 6 years, 7 months ago

Fermantation is the process of converting sugar into alchoal with the action of microbes like (yeast etc) this is called fermentation

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Sunita Singh 6 years, 7 months ago

Fermentation helps in making dough for iflis , dosas etc . It is mostly used in baking of cakes to make them rise . It is also used in beers and other such beverages

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Where does bacteria exist ?

Posted by Pradeep Subudhi 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Microorganisms like bacteria are single cellular whereas some algae and fungi are multicellular. They are found in all types of habitats. They can live and survive in almost all kinds of environment like hot springs, ice-cold waters, saline water, desert soil or marshy land.

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What is crop production practices?

Posted by Mohit Verma 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Abhinav Sahu 6 years, 7 months ago

Practice which is done for the production of the crop is known as crop production practices

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When we feel fiver our body become hot and fever occur when we in contact of cold environment

Posted by Prince ? 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Sunita Singh 6 years, 7 months ago

Spelling of fever is wrong

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Why synthetic fibres are preferred over natural fibres

Posted by Rohit Kumar 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Rohit Kumar 6 years, 7 months ago

Hgccbjh

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what are the uses of metals and non metals in our daily lives

Posted by Yug Agarwal 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Uses of Metals:
i.   Iron, copper and aluminium metals are used for making cooking utensils.
ii.   Copper is used in making electrical wires for household wiring, electric motors, etc.
iii.   Aluminium foils are used for packaging medicines, chocolates, food items and many other materials.

Uses of Non-metals:
i.   Oxygen is used by plants and animals including human beings for breathing.
ii.   Nitrogen is used in making fertilisers to enhance the growth of plants.
iii.   Chlorine is used in water purification.

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What change are seen in the weight of air on a mountain and at our place

Posted by Dhanush Dhari Jha 6 years, 7 months ago

CBSE > Class 08 > Science

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Class 7 how does glucose help the patient recover

Posted by Yamini Dumka 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Abhinav Sahu 6 years, 7 months ago

Glucose help patient to recover as it fulfill the scarcity of water which we need

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What do you mean by food preservation

Posted by Shekhar Singh Bhartiya 6 years, 7 months ago

CBSE > Class 08 > Science

3 answers

R T 6 years, 7 months ago

this answer is not correct

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R T 6 years, 7 months ago

no sorry

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R T 6 years, 7 months ago

food preservation means food poisoning . Take some steps when food preservation: 1)we know that after the eating of food your hands wash in dettlo before eat . 2)You protect the food in aluminium sheets .

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Why are viruses considered to be on the borderline of living and non living?

Posted by Sachi Chaubey 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Akshit Thakur Singh 6 years, 7 months ago

Because when it is out of any living body it act as dead but when it enters in living body it act as living

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Nirmal Sharma 6 years, 7 months ago

Viruses are considered border line of living and non loving because they reproduce inside the cells of host organisms which may be a bacterium , plants , animals etc

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What's electrode ?

Posted by Roshan Lal 6 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

A solid electrical conductor through which an electric current enters or leaves something like a dry cell or an electrolytic cell is called an electrode.

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Please show the book work of spond company

Posted by Arsh Nahal 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Arsh Nahal 5 years, 5 months ago

Where is punjabi book

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Arsh Nahal 6 years, 7 months ago

Of 1 chapter

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Write a short paragraph on the harmful effects of microorganisms

Posted by Pantwi Debbarma 6 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Khilander Kumar 6 years, 7 months ago

Microorganisms cause disease in animals.For example :in humans, bacteria cause disease such as tuberculosis, cholera, typhoid, etc. In cattle, the foot and mouth disease is caused by virus. Also, several microbes cause disease in plants. For example: the productivity of wheat, orange, apple, etc. is reduced due to microbial disease in plants. Certain microbes on entering into our body, produce toxic substances. This leads to food poisoning .Some microorganisms such as fungus spoil our food. For example: bread when left unused under moist conditions get spoilt by fungus, producing a white cotton like growth on the bread.

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Hermoine Granger 6 years, 7 months ago

The spoil things during mosoon, ruin crops attack food items.... Main points are these exaggerate them yourself

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