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Cell membrane

Posted by Debadyut Sahoo Likun 8 years, 4 months ago

CBSE > Class 08 > Science

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Fertilizer

Posted by Babu Bhatia Bhatia 8 years, 4 months ago

CBSE > Class 08 > Science

3 answers

Anjali Shrimali 8 years, 4 months ago

Fertilizer does not provide any humus to the soil

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Shachi Mishra 8 years, 4 months ago

Fertilizers are an inorganic compound or salt which is made in factories by chemical processes

1Thank You

Akshat Santosh 8 years, 4 months ago

Fertiliser are chemical which are used to remove insects from crops

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Image

Posted by Babu Bhatia Bhatia 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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What is the purest form of carbon

Posted by Stuti Srivastav 8 years, 4 months ago

CBSE > Class 08 > Science

3 answers

Shachi Mishra 8 years, 4 months ago

Coal mainly contains carbon so the slow process of conversion of dead vegetation to coal is known as carbonisation. And Coke is a thick black substance which is almost a pure form of carbon which we get when coal is processed in factories. This is the right ans.

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Shachi Mishra 8 years, 4 months ago

Coke

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Akshat Santosh 8 years, 4 months ago

Coal is the purest from of carbon

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3 types of force

Posted by Ankur Singh 8 years, 4 months ago

CBSE > Class 08 > Science

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What is refractation ?

Posted by Laksha Gupta 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Natural

Posted by Harsha Vardhan Vardhan 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Akshat Santosh 8 years, 4 months ago

Which are occurred by nature not made by humans

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What is biology

Posted by Ujjwal Prajapati 8 years, 4 months ago

CBSE > Class 08 > Science

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What is the difference between static force and electrostatic force

Posted by Pri Dey 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Difference between zoo and scantuary

Posted by Ananya Mandal 4 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 4 years, 7 months ago

A zoo contains animals which are brought from different parts of the country and other countries for exhibition. A wildlife sanctuary contains animals and birds found locally in that area.

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On what principle is the soda acid fire extinguisher based

Posted by Ananya Mandal 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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An element E combines with oxygen to form oxide E2O . When E2O is added to water,it turns red litmus blue is E metal or non metal ? Give reason to support the answer

Posted by Ananya Mandal 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Importance of biosphere reserve

Posted by Ayushi Pathak 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Simran Sidhu 8 years, 4 months ago

☺

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Compare between national park, wildlife sanctuary, biosphere reserve with 2 example each

Posted by Ayushi Pathak 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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What is fuel

Posted by Jaydeep Setua 8 years, 4 months ago

CBSE > Class 08 > Science

2 answers

Shraddha Agrawal 8 years, 4 months ago

A fuel is a substance that reacts with oxygen and burns to release energy

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Amar Kumar 8 years, 4 months ago

A substance that produces useful energy when it undergoes a chemical or nuclear reaction. Fuel such as coal, wood, oil, or gas provides energy when burned.

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what is called external fertilisation

Posted by Yerrabala Deepak 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Class 8

Posted by Ansh Dedha 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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What is nitrogen cycle

Posted by Appu Kumar 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Amar Kumar 8 years, 4 months ago

Nitrogen Cycle :Nitrogen cycle is all about the movement of nitrogen between various elements on Earth (like air, soil, living organisms etc.). The amount of nitrogen in the atmosphere remains constant. Atmosphere has approx. 78% nitrogen.

Atmospheric Nitrogen is fixed into the soil N₂ fixing microbes convert atmospheric N₂into nitrogen compounds like NH₃ .
Plants utilize nitrogen from soil through their roots .
Animals utilize nitrogen, feeding on plants.
When Plants & animals die, nitrogenous wastes are returned to soil.
Decomposers convert some part to nitrogen compounds to be used by plants.
Denitrifying bacteria convert it into atmospheric N₂ again.

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What is tsunami

Posted by Vanshika Agrawal 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Amar Kumar 8 years, 4 months ago

A tsunami or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake.

Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.

Unlike normal ocean waves which are generated by wind, or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.

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How we can define that it is Bacteria, fungi, algae,protozoa

Posted by Pervez Alam 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Vaishnavi Tiwari 8 years, 4 months ago

Using a term callend Microorganisms

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A girl standing in front of a wall, claps at an interval of 0.8 s regularly. The echo of the first clap coincides with the fourth clap. The distance between the girl and the wall is [Take speed of sound as 340 m/s]

Posted by Sakshi Sahu 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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What is the formula of finding our full growth at the 18 years?

Posted by Aditya Anand 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Why tamato is red and leaves are green?

Posted by Vandana Jain 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Amar Kumar 8 years, 4 months ago

Tomatoes contain two pigments for photosynthesis chlorophyll, which is green, and lycopene, which is red. When tomatoes start to grow, they contain much less lycopene than chlorophyll, which gives them their green color. But when harvest season arrives, the days shorten and temperatures drop, causing chlorophyll to dissolve and lycopene to take over the red shade of the fruit. Leaves contain chlorophyll, the pigment in plants which gives them a green hue.

1Thank You

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Defin e of metal

Posted by Neetu Singh 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Praketh Dutt Chowtapalli 8 years, 4 months ago

Metals are the elements that upon their electrons positive ions

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Who discovered antibiotics?

Posted by Darshan Darshan 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Yash And Pankhuri Newatia 8 years, 4 months ago

Alexander Fleming discovered antibiotics

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What do you mean by nitrogen fixation

Posted by Akshat Santosh 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Aradhya Singh 8 years, 4 months ago

The process of fixing nitrogen into ammonia then into nitrogenous compound

1Thank You

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What is plastid

Posted by Sanika Gond 8 years, 4 months ago

CBSE > Class 08 > Science

0 answers

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Write cornea defination

Posted by Jagdish Bamania 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Anjali Sharma 8 years, 4 months ago

It is a part in human eye

defined as the transparent part in front of eyes that covers the iris and pupil of the eye.
its function is protective function along with eyelid and it act as a controlling window or the outermost lens of eyes .

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Avoid plastic as far as possible. Comment on this advice

Posted by Shreya Desai 8 years, 4 months ago

CBSE > Class 08 > Science

1 answers

Supriya Giri 8 years, 4 months ago

Avoid plastic as far as possible because plastics are not eco friendly and it takes several years to get decompose and burning plastic causes a lot of pollution..

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The chemical equation of the reaction that occurs when natural gas is burnt

Posted by Deepak Kemmanakeri 8 years, 4 months ago

CBSE > Class 08 > Science