CBSE > Class 07 > Science | CBSE Board | Homework Help

There are four chambers in our heart. The two upper chambers and two lower chambers. Oricals are the two upper chambers and ventricles are two lower chambers

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Lakshmi Deepak 4 years, 9 months ago

There are 4 chambers in our heart

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Yashri Amaliyar 4 years, 9 months ago

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Sudhir Kumar Hati Ritika Hati 4 years, 9 months ago

4 chambers

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Charanjeet Gena 4 years, 9 months ago

4 chamber

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What is alobga

Posted by Ankit Choudhary 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Kirti Sharma 4 years, 9 months ago

through, on, beside, over, or parallel to the length or direction of; from one end to the other of: to walk along a highway; to run a border along a shelf. during; in the course of: Somewhere along the way I lost my hat.

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Why is forest called 'dynamic living' entity?

Posted by Palak J 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Nihal Mehta 4 years, 9 months ago

The wide variety of animals helps in pollination and carries the seeds to different areas. This ultimately helps in growth of new plants and the forests. ... These nutrients are utilized by the seeds to grow. Thus forest is full of life and vitality so it is called a dynamic living entity.

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How do you get relief from muscular cramps .explain

Posted by Parul Kapil 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Manisha Gundlur 4 years, 9 months ago

If you have a cramp, these actions may provide relief: Stretch and massage. Stretch the cramped muscle and gently rub it to help it relax. For a calf cramp, put your weight on your cramped leg and bend your knee slightly. ... Apply heat or cold. Use a warm towel or heating pad on tense or tight muscles.

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What is full form of (RBC) and (WBC)

Posted by Lakshmi Deepak 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Sudhir Kumar Hati Ritika Hati 4 years, 9 months ago

WBC- White blood cells

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Sudhir Kumar Hati Ritika Hati 4 years, 9 months ago

RCB- Red blood cells

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Charanjeet Gena 4 years, 9 months ago

Red Blood Cells - RBC White Blood cells - WBC

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Navdeep Kaur 4 years, 9 months ago

White blood cells

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Navdeep Kaur 4 years, 9 months ago

Red blood cells

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What is mean by fertilization? list the steps leading to formation of embryo.

Posted by Farzana Ansari 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Manisha Gundlur 4 years, 9 months ago

The stages of fertilization can be divided into four processes: 1) sperm preparation. 2) sperm-egg recognition and binding. 3) sperm-egg fusion. 4) fusion of sperm and egg pronuclei and formation of the zygote.

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What is labalotary thermometer and clinical thermometer

Posted by Lakshmi Deepak 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Samyak Bhujade 4 years, 9 months ago

Laboratory thermometer is use to measure temperature of liquid substance ( such as - water , chemical, etc . ) Laboratory thermometer range is from -10⁰C to 100⁰C Laboratory thermometer doesn't have kink, that is why mercury flow down quickly, as soon as thermometer is removed from the substance. Clinical thermometer is use of measure temperature of our ( human ) body. Clinical thermometer range is from 35⁰C to 42⁰C Clinical Thermometer have kink which prevents mercury to flow down quickly .

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Aditya Chaudhari 4 years, 9 months ago

Laboratory thermometer range is 10 degree to 110 degree

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ANSWER

name the acid present in unripe green apples , vinegar, tea , sour milk and orange juice

Posted by Rajni Rani 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Ankit Choudhary 4 years, 9 months ago

Tera sar

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ANSWER

Please teach me lesson 1,2,3

Posted by Sahil Pahal 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Nishtha Patel 4 years, 9 months ago

Thats "citric acid"

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Rajni Rani 4 years, 9 months ago

name the acid present in unripe green apples, vinegar, tea ,sour milk and orange juice

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ANSWER

what is the difference between concave lens and concave mirror

Posted by Angel Rajotia 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Prachi Kashyap 4 years, 9 months ago

Convex lens Convex lens forms real and virtual both type of image. It forms magnified image Concave lens Concave lens always forms virtual image. It always form diminished image.

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Manisha Gundlur 4 years, 9 months ago

A concave mirror is opaque whereas a concave lens is transparent. A concave mirror can form both real, inverted images of various sizes and virtual, erect and enlarged images depending on the position of the object whereas a concave lens forms only virtual, diminished and erect images for all positions of the object.

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Why does a ship float on water but the needle sink

Posted by Shital Kamble 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Saismita Behera 4 years, 9 months ago

Because ship have more gravity power than needle

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Manisha Gundlur 4 years, 9 months ago

This can be explained as follows: A ship is made up of iron and steel, but it has a lot of space filled with air. This causes the ship to displace water with a weight equal to the weight of the ship. On the other hand, the needle displaces more water than its weight and hence it sinks.

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Food from where

Posted by Sudhir Yadav 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Ahana Sharma 4 years, 9 months ago

From fields

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Rima Mai 4 years, 9 months ago

food factory

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How can we measure gases like carbon dioxide, oxygen etc

Posted by Ved Makwana 4 years, 9 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Definition of premolar

Posted by Manya Parmar 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Rima Mai 4 years, 9 months ago

premolar are used for grinding and peircing of teeth

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ANSWER

Name any four components of an electric circuit. Give their electric symbols

Posted by Komal Singh 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Tejaswini Punde 4 years, 9 months ago

Connecting wires, battery , cell , switch in on position , switch in off position

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Lakshmi Deepak 4 years, 9 months ago

Cell,battery,switch

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Shital Kamble 4 years, 9 months ago

Cell, bulb , switch, battery , wire We can't draw their symbols

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Sweety Kumari 4 years, 9 months ago

Cell,wire,switch,bulb

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Komal Singh 4 years, 9 months ago

Where is my answer

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ANSWER

Write the SI unit of speed ?

Posted by Kirti Sharma 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Shital Kamble 4 years, 9 months ago

M/S

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Sweety Kumari 4 years, 9 months ago

meter per second (ms-1)

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Paras Mehta 4 years, 9 months ago

M/S

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Anonymous Person 4 years, 9 months ago

How reproduction in humans done ?? Explain briefly

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V Rock Gamerz 4 years, 9 months ago

Its Metre/per second

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ANSWER

Posted by Panda🧿🐼 Gujjar 🙇🦅 4 years, 9 months ago

CBSE > Class 07 > Science

1 answers

Fatima Rahman❣️❣️ 4 years, 9 months ago

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ANSWER

What is photo stnthesis

Posted by Aryan Tiwari 4 years, 9 months ago

CBSE > Class 07 > Science

3 answers

Rima Mai 4 years, 9 months ago

The process by which green plants prepare their food by raw material like carbon dioxide , water , sunlight and chlorophyll . example : pitcher plant , croton etc

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Anonymous Person 4 years, 9 months ago

How reproduction in humans done ?? Explain briefly

1Thank You

Sweety Kumari 4 years, 9 months ago

The process of synthesising food by green plants, with the help of sunlight, water, carbon dioxide and chlorophyll .

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Why nutrition is Nessesary ?

Posted by Itz_Me _Kavya007 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Anonymous Person 4 years, 9 months ago

How reproduction in humans done ?? Explain briefly

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Panda🧿🐼 Gujjar 🙇🦅 4 years, 9 months ago

statedifferencebteweenacidsandbases

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Monisha Chennaveerappa 4 years, 9 months ago

We need nutrition for energy

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Saksham Puri 4 years, 9 months ago

A healthy diet throughout life promotes healthy pregnancy outcomes, supports normal growth, development and ageing, helps to maintain a healthy body weight, and reduces the risk of chronic disease leading to overall health and well-being.

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Itz_Me _Kavya007 4 years, 9 months ago

Plx answer

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ANSWER

How much time did an electric current take to reach to electric appliances when we on the switch

Posted by Ved Makwana 4 years, 9 months ago

CBSE > Class 07 > Science

4 answers

Ved Makwana 4 years, 9 months ago

Microsesond Or milisecond

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Ved Makwana 4 years, 9 months ago

How can we measure gases like carbon dioxide, oxygen etc

1Thank You

Anonymous Person 4 years, 9 months ago

How reproduction in humans done ?? Explain briefly

2Thank You

Monisha Chennaveerappa 4 years, 9 months ago

We can say that it trvels as fast as light

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ANSWER

What is the definition of circuits

Posted by Pulkit Kadyan 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Vaishnavi Khadria 4 years, 9 months ago

A continuous conducting path through which electric current can pass

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Rashi Gupta 4 years, 9 months ago

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

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What is uric acids??

Posted by Versha Sharma 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Versha Sharma 4 years, 9 months ago

Thank a lot to every one to answer me and you all have ant doubt then ask me i 'll solve your problems and i am also your friend be humble with me ??

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Nihal Mehta 4 years, 9 months ago

Uric acids contains urea and uric acids are excrete by birds, lizards,snakes.

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Anonymous Person 4 years, 9 months ago

How reproduction in humans done ?? Explain briefly

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Aryan Porandla 4 years, 9 months ago

Uric acid contains :urine

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Abhishrey Srivastav 4 years, 9 months ago

Uric acid is a acid which is contained in uren

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ANSWER

What is called sewage

Posted by Prateek Sharma 4 years, 9 months ago

CBSE > Class 07 > Science

3 answers

Ahana Sharma 4 years, 9 months ago

Waste water released from homes, industries, buildings etc.which contain number of pollutants and harmful chemicals is known as sewage

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Sweety Kumari 4 years, 9 months ago

It is waste that has dissolved and suspended impurities.

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Janhvi Gupta 4 years, 9 months ago

The sewage is guter

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ANSWER

Full form of science.

Posted by Fatima Rahman❣️❣️ 4 years, 9 months ago

CBSE > Class 07 > Science

5 answers

Vishal Prajapat 4 years, 9 months ago

S =Systematic c= comprehensive I =investigation. ,,? Exploration ,,,,,,? natural. Causes and effect

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Paras Mehta 4 years, 9 months ago

Systematic, comprehensive , investigation” and “Exploration of natural, causes and effect” is the full form of S. C. I. E. N. C. E. Explanation: The science we do systematical the procedure to finy results. The explanation of systematic way are given in a comprehensive. The lab investigations are made for the experiments to find out results. The exploration of the natural causes it the environments issues the effects of the natural causes how, it affects the natural effects in the environment and in the atmosphere. The science is an Excellent subject that given fun.

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Avneet Kaur 4 years, 9 months ago

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Janhvi Gupta 4 years, 9 months ago

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Anitta Samuel 4 years, 9 months ago

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What do you mean by contaminants

Posted by Jagdish Jimbhal 4 years, 9 months ago

CBSE > Class 07 > Science

2 answers

Avneet Kaur 4 years, 9 months ago

Contaminants means any physical, chemical, biological or radiological substance or matter in water. Some contaminants may be harmful if consumed at certain levels in drinking water. ...

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Ahana Sharma 4 years, 9 months ago

Contaminants means any physical, chemical, biological or radiological substance or matter in water. Some contaminants may be harmful if consumed at certain levels in drinking water. ...

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what is meant by dispersion

Posted by Shamsher Kanchap 4 years, 9 months ago

CBSE > Class 07 > Science