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 5 years, 1 month ago

There are 4 chambers in our heart

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Yashri Amaliyar 5 years, 1 month ago

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Sudhir Kumar Hati Ritika Hati 5 years, 1 month ago

4 chambers

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Charanjeet Gena 5 years, 1 month ago

4 chamber

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What is alobga

Posted by Ankit Choudhary 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Kirti Sharma 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Nihal Mehta 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Manisha Gundlur 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Sudhir Kumar Hati Ritika Hati 5 years, 1 month ago

WBC- White blood cells

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Sudhir Kumar Hati Ritika Hati 5 years, 1 month ago

RCB- Red blood cells

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Charanjeet Gena 5 years, 1 month ago

Red Blood Cells - RBC White Blood cells - WBC

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Navdeep Kaur 5 years, 1 month ago

White blood cells

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Navdeep Kaur 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Manisha Gundlur 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Samyak Bhujade 5 years, 1 month 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 5 years, 1 month ago

Laboratory thermometer range is 10 degree to 110 degree

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

Posted by Rajni Rani 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Ankit Choudhary 5 years, 1 month ago

Tera sar

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ANSWER

Please teach me lesson 1,2,3

Posted by Sahil Pahal 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Nishtha Patel 5 years, 1 month ago

Thats "citric acid"

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Rajni Rani 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Prachi Kashyap 5 years 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 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Saismita Behera 5 years, 1 month ago

Because ship have more gravity power than needle

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Manisha Gundlur 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Ahana Sharma 5 years, 1 month ago

From fields

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Rima Mai 5 years, 1 month ago

food factory

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How can we measure gases like carbon dioxide, oxygen etc

Posted by Ved Makwana 5 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Definition of premolar

Posted by Manya Parmar 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Rima Mai 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Tejaswini Punde 5 years, 1 month ago

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

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Lakshmi Deepak 5 years, 1 month ago

Cell,battery,switch

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Shital Kamble 5 years, 1 month ago

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

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Sweety Kumari 5 years, 1 month ago

Cell,wire,switch,bulb

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Komal Singh 5 years, 1 month ago

Where is my answer

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ANSWER

Write the SI unit of speed ?

Posted by Kirti Sharma 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Shital Kamble 5 years, 1 month ago

M/S

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Sweety Kumari 5 years, 1 month ago

meter per second (ms-1)

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Paras Mehta 5 years, 1 month ago

M/S

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Anonymous Person 5 years, 1 month ago

How reproduction in humans done ?? Explain briefly

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V Rock Gamerz 5 years, 1 month ago

Its Metre/per second

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ANSWER

Posted by Panda🧿🐼 Gujjar 🙇🦅 5 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Fatima Rahman❣️❣️ 5 years, 1 month ago

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ANSWER

What is photo stnthesis

Posted by Aryan Tiwari 5 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Rima Mai 5 years, 1 month 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 5 years, 1 month ago

How reproduction in humans done ?? Explain briefly

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Sweety Kumari 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Anonymous Person 5 years, 1 month ago

How reproduction in humans done ?? Explain briefly

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Panda🧿🐼 Gujjar 🙇🦅 5 years, 1 month ago

statedifferencebteweenacidsandbases

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Monisha Chennaveerappa 5 years, 1 month ago

We need nutrition for energy

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Saksham Puri 5 years, 1 month 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 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

4 answers

Ved Makwana 5 years, 1 month ago

Microsesond Or milisecond

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Ved Makwana 5 years, 1 month ago

How can we measure gases like carbon dioxide, oxygen etc

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Anonymous Person 5 years, 1 month ago

How reproduction in humans done ?? Explain briefly

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Monisha Chennaveerappa 5 years, 1 month ago

We can say that it trvels as fast as light

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What is the definition of circuits

Posted by Pulkit Kadyan 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Vaishnavi Khadria 5 years, 1 month ago

A continuous conducting path through which electric current can pass

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Rashi Gupta 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Versha Sharma 5 years, 1 month 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 5 years, 1 month ago

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

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Anonymous Person 5 years, 1 month ago

How reproduction in humans done ?? Explain briefly

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Aryan Porandla 5 years, 1 month ago

Uric acid contains :urine

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Abhishrey Srivastav 5 years, 1 month ago

Uric acid is a acid which is contained in uren

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ANSWER

What is called sewage

Posted by Prateek Sharma 5 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Ahana Sharma 5 years, 1 month 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 5 years, 1 month ago

It is waste that has dissolved and suspended impurities.

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Janhvi Gupta 5 years, 1 month ago

The sewage is guter

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Full form of science.

Posted by Fatima Rahman❣️❣️ 5 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Vishal Prajapat 5 years, 1 month ago

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

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Paras Mehta 5 years, 1 month 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 5 years, 1 month ago

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Janhvi Gupta 5 years, 1 month ago

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Anitta Samuel 5 years, 1 month ago

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What do you mean by contaminants

Posted by Jagdish Jimbhal 5 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Avneet Kaur 5 years, 1 month 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 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 07 > Science