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What is irrigation and there methods?

Posted by Vaishnavi Bhatt 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Rajni Maheshwari 3 years, 6 months ago

Supply of water to plants called irrigation

0Thank You

Vaishnavi Bhatt 3 years, 6 months ago

The supply of water to crops at regular intervals is called irrigation . (1) sprinkler system : this system is more useful on the uneven land where Sufficient water is not available the perpendicular pipes having rotating nozzles on top are joined to the main pipeline at regular intervals. when water is allowed to flow through the main pipe under pressure with the help Pump, It escapes from the rotating nozzle. it that include on the crop as it is raining spring colour is very useful following useful for lawns , coffee plantations and several other crops . (2) Drip system : In this system the water falling drop by drop directly near the roots. so it is called drip system . it is the best technique for watering fruits plants Garden and trees water is not waste at all. it is the bone in reason where ability for water is poor.

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ANSWER

Pollution intro

Posted by Savita Kadam 3 years, 6 months ago

CBSE > Class 08 > Science

3 answers

Harshita Dogra 3 years, 4 months ago

Pollution :- The contamination of air , by some unwanted substances having harmful effects on both the living and non - living things

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Shiva Singh 3 years, 6 months ago

Pollution is the introduction of harmful materials into the environment.

1Thank You

Bhawana Goswami 3 years, 6 months ago

R.H.S

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ANSWER

What do tou mean by irrigation

Posted by Akash Kumar Singh 3 years, 6 months ago

CBSE > Class 08 > Science

4 answers

Radhna Bhakti 3 years, 6 months ago

Supply of water at regualr intervals of time to crop is called irrigation

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Nikita And Pratik 3 years, 6 months ago

The supply of water to the crop at regular intervals of time is called irrigation .

0Thank You

Divyanshi Ahlawat 3 years, 6 months ago

The supply of water

2Thank You

Shubham Sharma 3 years, 6 months ago

Nbbn

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ANSWER

A liquid fuel, used in homes is__________ .

Posted by Vishesh Dahiya 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Nikita And Pratik 3 years, 6 months ago

LPG(liquid petroleum gas )

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Roma Gujjar 3 years, 6 months ago

LPG

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Aditi ☄️☄️ Singh 3 years, 6 months ago

LPG

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Surbhi Somvanshi 3 years, 6 months ago

A liquid fuel, used in homes is _Liquefied__petroleum__gas_

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Tulja Sahu 3 years, 6 months ago

LPG

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ANSWER

Why stones are gormed in human body?

Posted by Versha Sharma 3 years, 6 months ago

CBSE > Class 08 > Science

3 answers

Versha Sharma 3 years, 5 months ago

Thank you so much

0Thank You

Namrata Gupta 3 years, 6 months ago

Stones are formed when urine becomes concentrated, allows minerals to crystallize and stick together.

1Thank You

Versha Sharma 3 years, 6 months ago

*formed

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ANSWER

prepare a herbarium of 10 cereals,pulses,oil seeds atleast from each variety

Posted by Pola Karthikeya 3 years, 6 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

J a m grammar pata karna hai

Posted by Nishchal Fulavanshi 3 years, 6 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What are the advantages of leveling?

Posted by Priyanshu Singh 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Roma Gujjar 3 years, 6 months ago

Because the soil is in level and all the nutrients are equally divided into each plant

1Thank You

Radhna Bhakti 3 years, 6 months ago

When the soil is levelled properly then there is proper growth of crops as all get equal nutrients bcs soil is equal. So,it helps in proper growth of plants.

2Thank You

ANSWER

What do you mean by non communicable disease

Posted by Santoshi Verma 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Arya Patil__ 3 years, 6 months ago

1Thank You

Radhna Bhakti 3 years, 6 months ago

The disease which are caused due to deficiency of any nutrient in our body and cannot be passed further by contact are called non-communicable diseases

2Thank You

Raushan Kumar 3 years, 6 months ago

Both r right

1Thank You

Roma Gujjar 3 years, 6 months ago

That disease cannot be spread by touching and by wind are called non communicable disease

3Thank You

Dhruv Maheshwari 3 years, 6 months ago

Communicable disease is that diseas which can separate from one to another

1Thank You

ANSWER

define synthetic fibres.

Posted by Kakul Kashyap Deka 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Roma Gujjar 3 years, 6 months ago

Man made fibre are called synthetic fibre

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Dhiyaneshwaran E. M 3 years, 6 months ago

The Fibre that are made from chemical are called synthetic Fibre.

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Radhna Bhakti 3 years, 6 months ago

The fibres which are made by man by using different chemicals and are prepared artificially are called synthetic fibres.

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Nikita And Pratik 3 years, 6 months ago

The fibres which are made by man from chemical is known as synthetic fibres.

1Thank You

Ananya Tikait 3 years, 6 months ago

The fibres that are made from chemicals are known as synthetic fibres

1Thank You

ANSWER

Identity the following :- Providing water to crops

Posted by Parul Bisht 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Ekta Kaushik 3 years, 6 months ago

Irrigation

2Thank You

Mudit Pandey 3 years, 6 months ago

Irrigation

1Thank You

Nikita And Pratik 3 years, 6 months ago

Irrigation

0Thank You

Radhna Bhakti 3 years, 6 months ago

Irrigation

2Thank You

Ishika Vats 3 years, 6 months ago

is called irrigation

1Thank You

ANSWER

Cutting of crops after it is nature

Posted by Ankit Gulia 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Roma Gujjar 3 years, 6 months ago

Harvesting

3Thank You

Ekta Kaushik 3 years, 6 months ago

Harvesting

2Thank You

Nikita And Pratik 3 years, 6 months ago

Harvesting

3Thank You

Shraddha Singh 3 years, 6 months ago

When a crop is grown or matured , then we cut the crop for our use is called harvesting

3Thank You

Radhna Bhakti 3 years, 6 months ago

Harvesting

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ANSWER

What is formula for iron rust

Posted by Mudit Pandey 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Roma Gujjar 3 years, 6 months ago

Iron

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Roma Gujjar 3 years, 6 months ago

Fe+O2= FeO2

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Nikita And Pratik 3 years, 6 months ago

Fe+02=fe02

0Thank You

Namrata Gupta 3 years, 6 months ago

The formula is approximately Fe2O3•32H2O, although the exact amount of water is variable.

1Thank You

Radhna Bhakti 3 years, 6 months ago

Fe+O2=Iron oxide

1Thank You

ANSWER

Who invented science and why?

Posted by Amitkumar Roy 3 years, 6 months ago

CBSE > Class 08 > Science

4 answers

Vedansh Negi 3 years, 6 months ago

Two thousand-four hundred years have passed since Aristotle was born in 384 BCE in the small polis of Stageira in northern Greece. Civilized people have always celebrated the birth of Aristotle because, more than any other human being, he made civilization possible. He invented science.

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Shagun ??? 3 years, 6 months ago

The Lagoon: How Aristotle Invented Science. Aristotle is considered by many to be the first scientist, although the term postdates him by more than two millennia. In Greece in the fourth century BC, he pioneered the techniques of logic, observation, inquiry and demonstration.

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Rakesh Kumar Sah 3 years, 6 months ago

Bhai kya ho gaya

1Thank You

Nimesha ?? Santhosh 3 years, 6 months ago

Aristotle

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ANSWER

Crop rotation help in replenishing soil nutrients

Posted by Ukrea Mog 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Roma Gujjar 3 years, 6 months ago

Yes

0Thank You

Nikita And Pratik 3 years, 6 months ago

Yes

1Thank You

Rakesh Kumar Sah 3 years, 6 months ago

Yes

0Thank You

Bibhab Saha 3 years, 6 months ago

Sure

0Thank You

Radhna Bhakti 3 years, 6 months ago

Yes

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ANSWER

Is paper an inflammable substance

Posted by Nikhil Raj 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Dhiyaneshwaran E. M 3 years, 6 months ago

0Thank You

Ananya Tikait 3 years, 6 months ago

How

0Thank You

Nikhil Raj 3 years, 6 months ago

Both of you. Your answers are wrong

1Thank You

Rakesh Kumar Sah 3 years, 6 months ago

0Thank You

Nikita And Pratik 3 years, 6 months ago

0Thank You

ANSWER

Can anyone tell me displacement reaction in easy words. And explain me last qyestion that's 11 question of ch 4

Posted by Radhna Bhakti 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Nikita And Pratik 3 years, 6 months ago

Displacement reaction in simple words means that a stronger one will remove the less stronger one from its salt solution.

3Thank You

. . 3 years, 6 months ago

Sry idk

3Thank You

ANSWER

70 to 80% of volume of a mature plant cell is occupied by whom

Posted by Om Naik 3 years, 6 months ago

CBSE > Class 08 > Science

3 answers

Rohit Chanda 3 years, 6 months ago

Reticulum

0Thank You

Roma Gujjar 3 years, 6 months ago

Recticulum

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Sia ? 3 years, 6 months ago

endoplasmic reticulum

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ANSWER

70 to 80% of volume of a mature plant cell is occupied by

Posted by Om Naik 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 6 months ago

endoplasmic reticulum

0Thank You

ANSWER

Define teens

Posted by Versha Sharma 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Versha Sharma 3 years, 6 months ago

Thank you so much

1Thank You

Radhna Bhakti 3 years, 6 months ago

After age of 12. That's 13. In thirteen we can see at last we can hear teen

2Thank You

ANSWER

How can nitrogen replenished in soil naturally?

Posted by Priyanshu Singh 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 6 months ago

Nitrogen Can be Replenished in the Soil by Growing Leguminous Crops. The remaining nitrogen compounds made by Rhizobium bacteria mix with the soil in the field and enrich it. Thus, the soil in the fields gets enriched with nitrogen compounds in the natural way.

2Thank You

ANSWER

A force of 50 N is applied on a nail. The area of the head of the nail is 0.005 × 10^-4 m^2. Calculate the pressure exerted on the head of the nail

Posted by Prabhanshu Singh 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Prabhanshu Singh 3 years, 6 months ago

But the answer is not matched from my book the answer is in my book is 10 ^4 N m^-2

1Thank You

Sia ? 3 years, 6 months ago

Pressure = Force / area
= 50 / 0.005 * 10^-4
= 50 * 10^4 / 0.005
= 50*10^4*10^3 /5
= 10 * 10^4 * 10^3
= 10 ^8 pascal

2Thank You

ANSWER

What is pheromones released by ants

Posted by Devendra Thakre 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 6 months ago

In ants, trail pheromones are produced in the hindgut, Dufour's gland, the venom gland, and the tibial, tarsal, and abdominal glands. In some myrmecine and ponerine ants, the venom gland is the source of trail odors. Odor trails produced by termites originate from the abdominal sternal glands.

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ANSWER

Please tell what is pheromones

Posted by Kalpana Mahato 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 6 months ago

A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to impact the behavior of the receiving individuals.

1Thank You

ANSWER

What is fermentation with examples?

Posted by Aditya Raj 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Sia ? 3 years, 6 months ago

Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol. Bacteria perform fermentation, converting carbohydrates into lactic acid. The study of fermentation is called zymology.

0Thank You

Hansika Chawla 3 years, 6 months ago

The process of conversion of sugar into alcohol is called fermentation

1Thank You

Aspirant Aspirant 3 years, 6 months ago

The process of conversion of sugar into alcohol is called fermentation.

0Thank You

Nikita And Pratik 3 years, 6 months ago

The process of converting sugar into alcohol is called fermentation. Ex. When we add yeats to the dough of idli or dosa and leave it for over night the yeast breath anaerobically and produce alcohol so that in the morning the dough 's volume will increase and ready to cook.

0Thank You

Radhna Bhakti 3 years, 6 months ago

The process of converting sugar into alcohol is called fermentation. It was discovered by Louise Pasteur in 1857

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ANSWER

What is a crop name two types of crops give two example

Posted by Rohit Chanda 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Aspirant Aspirant 3 years, 6 months ago

Same kind of plants grows on a large scale is called crop. Types of crops: (i) Kharif crop (ii) Rabi crop Examples : * Kharif crop - Paddy and maize etc. * Rabi crop - wheat and gram etc.

1Thank You

Roma Gujjar 3 years, 6 months ago

When the same kind of plant grown in large scale is called crop example wheat. rice

1Thank You

Shivansh Dev 3 years, 6 months ago

Kharif crops and Rabi Crops

1Thank You

Radhna Bhakti 3 years, 6 months ago

When the plants of the same kind are grown on a large scale it is called a crop. There are 2 types of crops:- Kharif crops and rabi crops Kharif crops- paddy, maize Rabi crops-wheat, gram

2Thank You

Sia ? 3 years, 6 months ago

Kharif Crops	Rabi Crops
Sowing of seeds begins in the rainy season around July	Rabi seeds are sown at the beginning of autumn in November or December
Harvesting is done in September – October	Harvesting happens in June – July
Examples: Rice, Maize, Bajra etc	Examples: Wheat, Mustard, Peas etc

2Thank You

ANSWER

Why should plastics should not be banned

Posted by Aishwarya Pj 3 years, 6 months ago

CBSE > Class 08 > Science

3 answers

Aspirant Aspirant 3 years, 6 months ago

Plastics are not friendly with nature and they harm are nature.

0Thank You

Roma Gujjar 3 years, 6 months ago

Because it is the largest using material in the world

0Thank You

Radhna Bhakti 3 years, 6 months ago

We know that plastics are boon for us but misusing them makes it a curse for us. So,if we will wisely use them then there will be no curse of it.

2Thank You

ANSWER

What is mean bu asexual production

Posted by Trisha Muttamshetty 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Aditya Raj 3 years, 6 months ago

An individual can reproduce on its own without the involvement of another individual of same spices.

1Thank You

ANSWER

What are the 10 OMG things about India

Posted by Binal Shah 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 6 months ago

A floating post office.
Kumbh Mela gathering visible from space.
The wettest inhabited place in the world.
Bandra Worli Sealink has steel wires equal to the earth's circumference.
The highest cricket ground in the world.
Shampooing is an Indian concept.
The Indian national Kabaddi team has won all World Cups.
Water on the moon was discovered by India.
Science day in Switzerland is dedicated to Ex-Indian President, APJ Abdul Kalam.
India's first President only took 50% of his salary