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What are the significance of sexual reproduction?

Posted by Ketan Jagdale 11 months, 3 weeks ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is stamin

Posted by Account Deleted 11 months, 4 weeks ago

CBSE > Class 08 > Science

1 answers

Account Deleted 11 months, 3 weeks ago

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Sound is a kind of

Posted by Shreyash Panda 11 months, 4 weeks ago

CBSE > Class 08 > Science

5 answers

Account Deleted 11 months, 4 weeks ago

Energy

Anna Jolie 11 months, 4 weeks ago

Energy

Rizwanul Haque 11 months, 4 weeks ago

Energy

Satyajit Panda 11 months, 4 weeks ago

VIBRATION

Swathi Swathi 11 months, 4 weeks ago

Vibration

ANSWER

Notes of reaching the age adolescence

Posted by Samurai Gaming 11 months, 4 weeks ago

CBSE > Class 08 > Science

2 answers

Yatharth Gautam 11 months, 4 weeks ago

Ah oh

Mahi Parmar 11 months, 4 weeks ago

Yes

ANSWER

From chapter 1,3,4,5,6,7,8,9,10,11 you have studied in grade 8 so far which topic contact directly to a healthier lifestyle style for you and and world around you ? for example I have seen efect of burning coal and petroleum such as......

Posted by Yashvi Soni 1 year ago

CBSE > Class 08 > Science

1 answers

Kumkum Choudhary 11 months, 2 weeks ago

10

ANSWER

Write the change in puberty in bath boys and girls

Posted by Jasmine Negi 1 year ago

CBSE > Class 08 > Science

5 answers

Swini Jain 11 months, 3 weeks ago

In girls - widening of hips - enlargement of breasts - development of secondary reproductive organs - change fat distribution more fat below the skin at hips and thighs

Swini Jain 11 months, 3 weeks ago

In boys - increase in height - voice become deep and husk - facial hair such as moustache and beard develop - muscles develop and shoulders become broad(wider)

Vanshi Chandra 11 months, 3 weeks ago

In both girls and boys sweat and oil glands are active

Riya Singh 1 year ago

In girls • mensuration • largening of cheast • largening of private part • largening of hair in private part

Riya Singh 1 year ago

In boys •deepning in voice • largening of lurnux • boardning of shoulder • largening of hair in cheast

ANSWER

Complete the crossword puzzle using the hints given below

Posted by Vipasha. Nanote 1 year ago

CBSE > Class 08 > Science

3 answers

Akshiti Ajay 11 months, 3 weeks ago

Agriculture is a Latin word which is ‘ager' or ‘agri' meaning soil and culture meaning cultivation. The science of cultivating crops and rearing animals is also called Farming.

Pari Sharma 1 year ago

What?

Tashi Lhadol 1 year ago

What is agriculture

ANSWER

Sound can travel though a) gases only b) solids only c) liquids only d) solids, liquids and gases. ___Jo bhi Sahi Answer karega iss questions ka mein use 20 rupees ka redeem code du ga !!____

Posted by Ayush Yadav 1 year ago

CBSE > Class 08 > Science

5 answers

Varnee Savani 1 year ago

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Mohd Natik 1 year ago

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K.Mani Kanta Mani Kanta 1 year ago

Answer is d the sound travels in solids , liquid, gases

Ajay Kumar 1 year ago

Science

Pallavi Pal 1 year ago

Solids

ANSWER

The pendulum oscillates 40 times in 4 second find its time period and frequency

Posted by Ziya Patel 1 year ago

CBSE > Class 08 > Science

3 answers

Jaidev Sadhwani 1 year ago

0.1 second

Ayush Yadav 1 year ago

Therefore frequency = 40 vibrations /4 seconds= 10 Hertz. Time period is the time required to complete one oscillation. Frequency is the inverse of the time period. Therefore time period =110=0.1 seconds. ___I hope this answer help you___

Ziya Patel 1 year ago

See answer

ANSWER

A pendulum oscillates 40 times in 4 second find its time period and frequency

Posted by Ziya Patel 1 year ago

CBSE > Class 08 > Science

0 answers

ANSWER

How would you use an electroscope to determine the nature of charge on charged object?

Posted by Baishakhi Chanda 1 year ago

CBSE > Class 08 > Science

0 answers

ANSWER

Natural disaster

Posted by Shraddha Koppad 1 year ago

CBSE > Class 08 > Science

0 answers

ANSWER

Mujhe question nahi maloom

Posted by Aarushi Gupta 1 year ago

CBSE > Class 08 > Science

2 answers

Jaidev Sadhwani 1 year ago

To maloom karke aao

Faijan Abid 1 year ago

What is ignition temperature

ANSWER

Agar hamen first to 8 lesson chahie to hamen bhi batao jaldi se

Posted by Aarushi Gupta 1 year ago

CBSE > Class 08 > Science

0 answers

ANSWER

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Posted by Avishkar Galphade 1 year ago

CBSE > Class 08 > Science

4 answers

Shraddha Koppad 1 year ago

3dd

Anurag Kumar 1 year ago

What is force

Jeevan Kr 1 year ago

Living organism around us which we normally cannot see. these are called microorganism or microbes.

Sharad Rajput 1 year ago

What is microorganisms

ANSWER

Notes for ch20 pollution of water

Posted by Raghvi Dubey 1 year ago

CBSE > Class 08 > Science

2 answers

J. P Tiwari 1 year ago

Yes

Paramjit Dey 1 year ago

CBSE Class 08 Science Revision Notes Chapter – 18 Pollution of Air and Water Pollution: An undesirable change in the physical, chemical or biological characteristics of air, water and land that may be harmful to human life and other animals, living conditions, industrial processes and cultural assets. Pollutants: The agents that pollute our environment are called pollutants. Pollutants are the substances which contaminate air, water and land. For eg. smoke ,dust,fog and gases like sulphur dioxide and nitrogen dioxide. Air pollution is the contamination of air by impurities which may have a harmful impact on the living organisms and the non-living components. Sources of Air Pollution: Natural Sources: Smoke and dust arising from forest fires or volcanic eruptions. Methane gas arising from decaying organic matter. Man-made Sources: Exhaust gases from factories, power plants and automobiles. Carbon monoxide, nitrogen oxides, carbon dioxide, methane and sulphur dioxide are the major pollutants of air. Smog is a mix in the air of smoke and chemicals with fog. The chemical components of smog can include ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide. Smog can trigger breathing difficulties like asthma and coughing. Steps to prevent air pollution: • Use of fuels like CNG and unleaded petrol in automobiles. • Switching to alternative fuels, like solar energy, hydropower and wind energy. • Planting trees. • Travelling to school on a bicycle or on public transport or car pooling. • Avoiding the burning of leaves, trash and vegetable matter. • Restricting cigarette smoking. Increasing levels of greenhouse gases like CO2 ,CFC (Chloroflorocarbon) are leading to global warming. Excessive use of CFCs damages ozone layer which protects the earth from harmful UV rays emitted by the sun. Greenhouse Effect and Global Warming: The sun's rays warm the earth's surface. A part of the radiation that falls on the earth is absorbed by it and a part is reflected back into space. A part of the reflected radiation is trapped by the atmosphere due to presence of gases like water vapor, carbon dioxide, methane, nitrous oxide etc known as greenhouse gases. This is known as greenhouse effect. The trapped radiations further warm the earth and have adverse effects such as melting of glaciers and increasing sea levels. This phenomenon is known as global warming. Water pollution is the contamination of water by objectionable and harmful substances such as sewage, toxic chemicals, silt, etc. Sewage, agricultural chemicals and industrial waste are some of the major contaminants of water. Water which is purified and fit for drinking is known as potable water. Water is a precious natural resource. We must learn to conserve it.

ANSWER

What is cumbtion

Posted by Swati Dawar 1 year ago

CBSE > Class 08 > Science

1 answers

Alok Gupta Ix 1 year ago

The burning of a substance is called cumbtion

ANSWER

Types of epimorphosis

Posted by Aditya Thakur 1 year ago

CBSE > Class 08 > Science

1 answers

Sonam Kumari 1 year ago

An example of epimorphosis invertebrates are: Regeneration of Limbs. Regeneration of Lenses. Regeneration of internal body organs.

ANSWER

Define menstruation

Posted by Sampreethi Sampreethi 1 year ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 1 year ago

Menstruation is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the ******. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone levels and is a sign that pregnancy has not occurred.

Tanishka Nehul 1 year ago

If the fertilization does not occur the released egg and the thickened lining of the uterus along with its blood vessels are shade of this causes blooding in women which is called menstruation

ANSWER

How we control a fire?

Posted by Sejal Yadav 1 year ago

CBSE > Class 08 > Science

3 answers

Sonam Kumari 1 year ago

The most common method to control a Class-A fire is to remove heat by spraying the burning solid fuels with water. Another control method would be to reduce the oxygen content in the immediate vicinity of the fire (i.e., "smother" the fire), such as by the introduction of an inert gas such as carbon dioxide.

Tanishka Nehul 1 year ago

If the fire catches electric gadgets we have to use Fire extinguisher cylinder that have carbon dioxide

Anunandana S 1 year ago

Using water,fire extinguisher,sand

ANSWER

How we control a fire

Posted by Sejal Yadav 1 year ago

CBSE > Class 08 > Science

1 answers

Saumya Kshiti Raj Pal 1 year ago

We should avoid to spell water on the Fire we should call to the fire department and escape that place very carefully

ANSWER

Define the term puberty

Posted by Riya Shekhawat 1 year, 1 month ago

CBSE > Class 08 > Science

3 answers

Sonam Kumari 1 year ago

Puberty is the time in life when a boy or girl becomes sexually mature. It is a process that usually happens between ages 10 and 14 for girls and ages 12 and 16 for boys. It causes physical changes, and affects boys and girls differently. In girls: The first sign of puberty is usually breast development.

Aryan Kumar 1 year, 1 month ago

You can message me on Instagram

Aryan Kumar 1 year ago

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Posted by Riya Shekhawat 1 year ago

CBSE > Class 08 > Science

1 answers

Prabhu Datta Dilu 1 year ago

Male hormones - testosterone

ANSWER

What is meant by the term 'reproductive phase' in females

Posted by Riya Shekhawat 1 year, 1 month ago

CBSE > Class 08 > Science

2 answers

Prabhu Datta Dilu 1 year ago

What is fertilisation

Archana Pandit 1 year ago

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ANSWER

How to produce a baby

Posted by Dhruv Seth 1 year, 1 month ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 1 year ago

Have *** near the time of ovulation. If having *** every day isn't possible — or enjoyable — have *** every 2 to 3 days a week starting soon after the end of your period. This can help ensure that you have *** when you are most fertile. Maintain a normal weight.

Pariniti Panda 1 year ago

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ANSWER

This is the cause of motion

Posted by Priyanshi Kumawat 1 year, 1 month ago

CBSE > Class 08 > Science

0 answers

ANSWER

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Posted by Pooja Kumari 1 year, 1 month ago

CBSE > Class 08 > Science

0 answers

ANSWER

Definition of reproduction

Posted by Samiksha Danane 1 year, 1 month ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 1 year ago

the process of producing babies or young

Saumya Kshiti Raj Pal 1 year ago

Reproduction means producing a new ones among the existing or from the existing one

ANSWER

Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss Why the force acting on the bucket do not bring a change in its state of motion.

Posted by Mannat Dhull 1 year, 1 month ago

CBSE > Class 08 > Science

4 answers

Aarushi Gupta 1 year ago

Agar hamen is sal ka chahie to fifth se lekar to eight Tak

Krunal Pachpohar 1 year, 1 month ago

Sol. In this case, muscular force is acting in upward direction and the force of gravity is acting in downward direction. Both forces are acting in opposite directions to each other and hence nullify the effect of each other. Due to this, there is no change in the state of motion of the bucket.

Priyanshi Kumawat 1 year, 1 month ago

This is the cause of motion

Prince_ 🤴_ Kumar 1 year, 1 month ago

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ANSWER

Advantages of manure and fertilizers

Posted by Sharvari Gaware 1 year, 1 month ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 1 year ago

Manure adds nutrients to the soil without affecting its fertility. It does not damage crops and produces healthy plants. Fertilizers are chemicals which lower the fertility of the soil if used regularly. They also damage the crops and make them unhealthy for consumption.

Aman Singh 1 year, 1 month ago

Advantages of manure 1.improves the texture of soil 2.add humus to the soil 3.enhance the water holding capacity of the soil 4. It's not expensive and easily prepared from wastes in the farm ___________________________________ Advantages of fertilizer 1.improves soil fertility 2.plants absorb it easily 3.it can be easily transpoted in plants 4.it allows to grow crops faster But I think manure is more good for the soil

ANSWER

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