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    • Posted by M Ramana 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Hermoine Granger 6 years, 10 months ago

    Because they don't waste electricity by producing more heat

    0Thank You

    ANSWER

    • Posted by M Ramana 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Vansh Thakur 6 years, 10 months ago

    The rainwater and water from other sources such as river and ponds seeps through the soil and fiils the empty spaces and cracks deep below the ground the process of seeping of water into the ground is called infilltration the ground water thus get recharge by this process

    0Thank You

    Vikash Verma 6 years, 10 months ago

    By rain water

    2Thank You

    ANSWER

    • Posted by Jitendar Kumar 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Pinkal Negi 6 years, 10 months ago

    the main difference between xylem and phloem is that = xylem carries water and minerals to the leafs of the plant to make food and phloem carries the food products from the leaves to all parts of the plant

    0Thank You

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    • Posted by Pinkal Negi 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Aditya Chauhan 6 years, 10 months ago

    The organ inside your chest that send blood in our body

    0Thank You

    ANSWER

    • Posted by Pinkal Negi 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Dharmendra Kushwaha 6 years, 10 months ago

    The main difference between xylem and phloem is that the xylem carry water and minerals to the food factory of the plant " leave" while the phloem carry food products which is produce by the leaves to all the parts of the plant

    4Thank You

    Hermoine Granger 6 years, 10 months ago

    Both are vascular tissues but XYLEM transports water and minerals.... PHLOEM transports food and other materials for utilisation of the plant

    2Thank You

    ANSWER

    • Posted by Pratima Koparde 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Dharmendra Kushwaha 6 years, 10 months ago

    The transfer of pollen grain from the anther to the stigma is called pollination.

    0Thank You

    Gaurav Seth 6 years, 10 months ago

    Pollination. It is the transfer of pollen grains from the anther to stigma. 

    Pollination is of two types :

    1. Self-pollination. It is also called autogamy. The pollen grains are transferred from the anther to  the stigma of the same flower. e.g hibiscus.

    2. Cross-pollination. It is also called allogamy. If the transfer of pollen takes place from anther to stigma of a different flower of same plant, it is known as Geitonogamy. e.g  Maize.
    On the other hand, if cthe transfer occurs from anther to stigma of a different flower of different plant, it is called the Xenogamy. e.g papaya.

    2Thank You

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    • Posted by Sneha Rajpurohit 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Vansh Thakur 6 years, 10 months ago

    Convex answer if the surface of spherical mirror is called convex The lenses which at the centres than at the edges are called concave lenses these are also called diverging lenses

    0Thank You

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    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Dharmendra Kushwaha 6 years, 10 months ago

    Those changes in which no more product is formed and it is went back in it's original form is called physical change. Ex:- melting of ice. Those changes in which new substance is formed and it will never returned in its original form is called chemical change. Ex:- brusting if crackers

    1Thank You

    Vansh Thakur 6 years, 10 months ago

    Chemical change: A change in which one or more than one new substance are formed as chemical change Physical change: the change in the physical properties of a substance is called physical change

    1Thank You

    Israt Jahan 6 years, 10 months ago

    Physical change : The change in which the substance undergoes a change in its physical properties is called a physical change . Chemical change : The change in which one or more new substances are formed , is called a chemical change

    1Thank You

    ANSWER

    • Posted by Lionel Messi⚽⚽???? 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Lionel Messi⚽⚽???? 6 years, 10 months ago

    what do you mean by ????? this, bhumi salvi???

    1Thank You

    Bhumi Salvi 6 years, 10 months ago

    ?????

    1Thank You

    Bhumi Salvi 6 years, 10 months ago

    sexual reproduction results in zygote that gets developed a baby

    1Thank You

    Lionel Messi⚽⚽???? 6 years, 10 months ago

    someone answer please

    0Thank You

    ANSWER

    • Posted by Tyttas Rayan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 6 months ago

    The angular size of the book, or its image at the greater distance, is evidently less than the angular size when the book is placed at 25 cm while not using spectacles. Hence a myopic person prefers to remove his spectacles while reading a book. In short because with spectacles he/she can't able to read. Because myopia is that defect of vision due to which a person cannot see the distant objects clearly but a person can see the nearby objects clearly. So the myopic person can remove his spectacles while reading book.

    0Thank You

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    • Posted by Tanish Sahu 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Israt Jahan 6 years, 10 months ago

    You have written the wrong spelling of define you have written defime

    1Thank You

    ANSWER

    • Posted by Khushi Panchal 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Dharmendra Kushwaha 6 years, 10 months ago

    Taking oxygen through the nassal passages

    2Thank You

    Prabhat Kumar 6 years, 10 months ago

    First step is breathing

    1Thank You

    Lionel Messi⚽⚽???? 6 years, 10 months ago

    i think it is break down of glucose

    2Thank You

    Nihar Borah 6 years, 10 months ago

    Breathing.....m

    2Thank You

    ANSWER

    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Dharmendra Kushwaha 6 years, 10 months ago

    Four types of teeth

    1Thank You

    Israt Jahan 6 years, 10 months ago

    There are 4 types of teeth : Molars Premolars Canine Incisor

    2Thank You

    ANSWER

    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Harshit Mishra 6 years, 10 months ago

    22 march

    0Thank You

    Gautam Singh 6 years, 10 months ago

    22 march

    0Thank You

    Israt Jahan 6 years, 10 months ago

    22nd March

    3Thank You

    ANSWER

    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Niyati Niyati 6 years, 10 months ago

    ..sorry measure*

    0Thank You

    Niyati Niyati 6 years, 10 months ago

    To measur short time intervals.

    0Thank You

    Israt Jahan 6 years, 10 months ago

    It is to to measure the time interval of an event.

    0Thank You

    ANSWER

    • Posted by Aniket Loona 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Yogita Ingle 6 years, 9 months ago

    Lymph is a clear fluid sometimes white in colour comprises of white blood cells mainly lymphocytes. These cells also attack bacteria entering the cells. Lymph also contains the fluid from the intestine containing proteins and fats.

    0Thank You

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    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Sarika Jain 6 years, 10 months ago

    Newton's circular disc

    3Thank You

    Atharva Dixit 6 years, 10 months ago

    Ya Newton; s disk

    3Thank You

    Nishant Rishi 5 years, 9 months ago

    Kutta ensaan

    3Thank You

    Israt Jahan 6 years, 10 months ago

    Newton's disc

    3Thank You

    ANSWER

    • Posted by Israt Jahan 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Israt Jahan 6 years, 10 months ago

    Conduction : the transfer of heat from hotter end to the colder end is called conduction. (Transfer of solid ) Convection : when the hot air rises up and the cold air moves down to replace it , the mode of heat tranfer is called convection. ( transfer of liquid or gases) Radiation : it allows everything to pass through it.

    1Thank You

    ANSWER

    • Posted by Anjali Suda 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 0 answers
    ANSWER

    • Posted by Roshan M 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Tanish Sahu 6 years, 10 months ago

    Due to fertilisation

    0Thank You

    ANSWER

    • Posted by Anmol King 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 10 months ago

    The evaporation of water from the leaves of the plants is called transpiration. It is the process of water movement through a plant and its evaporation from aerial parts, such as from leaves but also from stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 99 - 99.5% is lost by transpiration. Leaf surfaces are dotted with pores called stomata, and in most plants they are more numerous on the undersides of the foliage.

    0Thank You

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    • Posted by Palak Agarwala 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Anik Kumar 6 years, 10 months ago

    We yawn after wake up because during sleeping breathing rate is slow in which our body doesnot get oxygen for energy required by our body, for maintain required energy we yawn

    1Thank You

    Atharva Dixit 6 years, 10 months ago

    When we are having lack of oxygen that time we yawn ? ?

    3Thank You

    Eshant Rai 6 years, 10 months ago

    Yanh is a thing from which we make thread

    2Thank You

    ANSWER

    • Posted by Khushi Tambi 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Harshit Mishra 6 years, 10 months ago

    Because forest work like a self sustaining system. Waste material of the forest convert into useful substance called HUMUS.

    0Thank You

    Niyati Niyati 6 years, 10 months ago

    Because every bit of it is used in some or other way. Even dead leaves decay and make compost.

    1Thank You

    ANSWER

    • Posted by Krish Jain 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Gaurav Seth 6 years, 10 months ago

    The decomposers play an importnat role in the ecosystem.
    They breakdown the organic waste products and dead remains of organisms into the inorganic substances needed by the producers (plants). They break down the complex organic substances into simple inorganic substances that replenish the fertility of the soil. They also serve as food for organisms like earthworms. 

    1Thank You

    ANSWER

    • Posted by Dharmendra Kushwaha 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 10 months ago

    Normal RBC ranges are: Male: 4.7 to 6.1 million cells per microliter (cells/mcL) Female: 4.2 to 5.4 million cells/mcL

    The normal number of WBCs in the blood is 4,500 to 11,000 WBC per microliter.

    A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood.

    The ratio of cells in normal human blood is approximately 600 RBCs : 1 WBC : 40 Platelets.

    0Thank You

    ANSWER

    • Posted by Gj 47 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Punam Pawar 6 years, 10 months ago

    it consists of a coil of wire would on an Iron piece. The coil act as an electromagnet. An iron strip with the hammer at one end is kept close to the electromagnet. There is the contact screw near the iron strip. When the iron Strip is in contact with screw ,the current flow through the coil which become an electromagnet. there it pulls the iron strip. In this process the hammer at the end of the strip strikes the gong of the bell to produce the sound.

    1Thank You

    ANSWER

    • Posted by Gj 47 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 10 months ago

    Electric Bell: It consists of a coil of wire wound on an iron piece. The coil acts as an electromagnet. An iron strip with a hammer at one end is kept close to the electromagnet. There is a contact screw near the iron strip. When the iron strip is in contact with the screw, the current flows through the coil which becomes an electromagnet. It, then, pulls the iron strip. In the process, the hammer at the end of the strip strikes the gong of the bell to produce a sound. However, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. The coil is no longer an electromagnet. It does not attract the iron strip. The iron strip comes back to its original position and touches the contact screw again. This completes the circuit. The current flows in the coil and the hammer strikes the gong again. The clapper strikes the gong rapidly producing almost continuous sound. This is how the bell rings.

    0Thank You

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    • Posted by Sh ~?Shrawni 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Shubham Kumar 6 years, 10 months ago

    When electric current pass through the iron its behave like a magnet.

    0Thank You

    Punam Pawar 6 years, 10 months ago

    Electromagnet is magnet which is used for separating magnetic material from garbage etc.

    2Thank You

    ANSWER

    • Posted by Anaya Star 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Harshit Mishra 6 years, 10 months ago

    Verticle, straight, upright...

    0Thank You

    Minakshi Mishra 6 years, 10 months ago

    Straight

    0Thank You

    Dheeraj Soni 6 years, 10 months ago

    erect means upright

    1Thank You

    ANSWER

    • Posted by Kalyani Nalabolu 6 years, 10 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Surya Pratap Singh 6 years, 10 months ago

    The human untreted ezcreation are a health hazard . It cause pollution of soil and water inclued the underground water . Thus , it contaminated the source of water from which people collect water for drinking and household purpose . When this cotaminated water use for drinking it can cause diseases such as cholera typhoid,heaptits,dysentery etc which even leads to death.

    0Thank You

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