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    • Posted by Ayan Rizvi 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    The body of some animals is made up of three layers of cells, the outer ectoderm, the middle mesoderm and the inner endoderm. The coelomic cavity or the coelom is the space enclosed by the mesoderm where the internal organs are suspended. Coelom is defined as a body cavity lined by an epithelium derived from the mesoderm. Organs formed inside the coelom can freely move, grow and develop independently of the body wall while the coelomic fluid cushions and protects them from mechanical shocks. The animals that have a true coelom are known as coelomic or eucoelomic. Example: Phylum Annelida, Phylum Chordata etc.

    3Thank You

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    • Posted by Aryan Singhal 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Pratyusha Samantaray 7 years, 2 months ago

    ,Sound produces a sensation of hearing in our ears.

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    • Posted by Gurlin Kaur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    • Nitrogen gas makes up around 78% of our atmosphere. It forms a part of many molecules like proteins, nucleic acid and some vitamins. Nitrogen is also found in other biologically important compounds such as alkaloids and urea. Nitrogen is thus an essential nutrient for all life forms.
    • The sequence in which nitrogen in the atmosphere is passed into the soil and life forms, and then released back into the atmosphere, is called the nitrogen cycle.
    • Nitrogen is introduced to the soil by fertilizers or animal and plant residues. Bacteria in the soil convert the nitrogen to ammonium and nitrate, which is taken up by the plants by a process of nitrogen fixation.
    • The process of the production of ammonia from organic compounds is called ammonification. Ammonification is the process — carried out by a variety of microorganisms — that breaks down proteins, amino acids, and other nitrogen-containing compounds in dead and waste organic matter to form ammonia.
    • Nitrification is the process by which ammonia is converted to nitrites (NO2-) and then to nitrates (NO3-).  This process naturally occurs in the environment, where it is carried out by specialized bacteria.
    • Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide.  These compounds are gaseous compounds and are not readily available for microbial growth; therefore they are typically released to the atmosphere.  Nitrogen gas makes up over 70% of atmospheric gases, thus the release of N2 to the atmosphere is benign. 

    4Thank You

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    • Posted by Dilnawaz Ansari 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Pratyusha Samantaray 7 years, 2 months ago

    Sorry Let u be 3m/s S=ut +1/2a(t)2 =(3)(5)+1/2(10)(5)2 =15+125=140m

    2Thank You

    Pratyusha Samantaray 7 years, 2 months ago

    Let u be 0 v=3m/s Time =5s S=ut +1/2a(t)2 S=(0)(5)+1/2(10)(5)2 =0+5(5)2 =125m

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    • Posted by Prachi Goswami 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Mahesh . 7 years, 2 months ago

    1 nm=10^-9m

    1Thank You

    Aryan Yadav 7 years, 2 months ago

    1nm=10^-9m

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    ANSWER

    • Posted by Shiv Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Pooja Khanna 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

     Because moon has no atmosphere. Earth atmosphere protects life on the earth by absorbing ultraviolet radiation coming from the sun and maintaining the average temperature on the surface ( not too hot and not too cold) through green house effect.

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    • Posted by Pooja Khanna 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    Ozone hole: The depletion is caused by the destruction of ozone by CFCs and by other compounds, such as carbon tetrachloride (CCl4) and carbon tetrafluoride (CF4).

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    • Posted by Raj Khurana 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Akram Khan 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Gaurav Seth 7 years, 2 months ago

    Newton’s Laws of Motion:

    Newton studied the ideas of Galileo and gave the three laws of motion. These laws are known as Newton’s Laws of Motion.

    • Newton's First Law of Motion: Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.
    • Newton's Second Law of Motion: The rate of change of momentum is directly proportional to the force applied in the direction of force.
    • Newton's Third Law of Motion: There is an equal and opposite reaction for evrey action

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    • Posted by Harshita Gupta 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Prachi Goswami 7 years, 2 months ago

    Crossing between genetically dissimilar plants

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    • Posted by Aditya Bishoyi 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Riyaz Malik 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Riyaz Malik 7 years, 2 months ago

    Triploid ..

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    • Posted by Vanshika Aliyan 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Kumkum Sarswat 7 years, 2 months ago

    Work is of three types Negative work Positive work Zero work Hope it is enough for you but I can explain more if you want Tanya ?????????????????

    1Thank You

    Vanshika Aliyan 7 years, 2 months ago

    3 types of work are negative positive and zero

    1Thank You

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    • Posted by Kumkum Sarswat 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 7 answers

    Dheeraj Singh 7 years, 2 months ago

    kusum see the temperature in which the density of water is maximum is 4 degree celsius and i am 110 % correct ☺??

    2Thank You

    Krishna Bang 7 years, 2 months ago

    250

    1Thank You

    Vanshika Aliyan 7 years, 2 months ago

    It's ok

    0Thank You

    Kumkum Sarswat 7 years, 2 months ago

    Thank you so much Tanya I also thought that it is the correct answer thanks again it helped me a lot ???????????????

    1Thank You

    Vanshika Aliyan 7 years, 2 months ago

    I am. So sorry the right answer is 4 degree Celsius I am very sure

    1Thank You

    Vanshika Aliyan 7 years, 2 months ago

    One second

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    Vanshika Aliyan 7 years, 2 months ago

    250

    1Thank You

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    • Posted by Varun Baghel 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Kumkum Sarswat 7 years, 2 months ago

    Because whales have mammary glands for the production of milk to nourish their young. They produce live young ones. ??????????????

    0Thank You

    Naresh Kumar Kurmi 7 years, 2 months ago

    Whale fish are breathing through lungs

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    • Posted by Nikhil Rajput 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 4 answers

    Gifty Rajesh 7 years, 2 months ago

    Gas have negligible force of attraction between them. So when they are released to a container they take all the space which is available for them.

    0Thank You

    Kumkum Sarswat 7 years, 2 months ago

    Gases have no fixed volume that's why it fills completely the vessel in which it is kept. ??????????

    0Thank You

    Jayanti Priya Jha 7 years, 2 months ago

    Because it is very free in nature and the space between the particles of gas is vey less so that it fills the vessel completely

    0Thank You

    Gaurav Seth 7 years, 2 months ago

    Gas fills completely The vessel in which it is kept because the due to high kinetic energy and negligible forces of attraction the particles of a gas are moving with a speed in all directions and the gas completely filled The vessel in which it is kept.

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    • Posted by Jay Prakash Prajapati 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Mahesh . 7 years, 2 months ago

    A system of organisation that has many levels from lowest to highest.

    1Thank You

    Akanksha Kumari? 7 years, 2 months ago

    A system or organisation that has many levels from lowest to highest.

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    • Posted by Yashwant Dhakad 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Pratyusha Samantaray 7 years, 2 months ago

    Waxy coating surface of leaf protect plant in desert by giving protection against loss of water, mechanical injury and invasion by parasitic fungi.

    0Thank You

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    • Posted by Guri Mann 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 3 answers

    Sandhya Singh 7 years, 2 months ago

    We need immune system Because it work against disease and protect the body from disease.. ???????????

    0Thank You

    Jay Prakash Prajapati 7 years, 2 months ago

    We need immune system to fight against the desease causing bacteria,virus by producing antibodies or by sending WBCs to tje target organ of bacteria etc.

    0Thank You

    Jayanti Priya Jha 7 years, 2 months ago

    We need an immune system because our immune system protects us from diffetent disease and if we have strong immune system then we have a power to fight the disease

    2Thank You

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    • Posted by Dhruv Omer 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Jayanti Priya Jha 7 years, 2 months ago

    If liver get affected then first it will damage ur stomac and digestive system and it will also affect to the abdomen and u find that this condition is abnormal

    0Thank You

    Akanksha Kumari? 7 years, 2 months ago

    1. Skin and eye appears yellowish 2. Abdominal pain and swelling 3. Itchy skin 4.swelling in legs and ankels 5. Vomiting

    0Thank You

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    • Posted by Divyansh Mittal 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Sanjeev Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Amey Vikram Singh 7 years, 2 months ago

    We consider both turtle and snake in same family because they both have same characteristics such as the both have exo skeleton of dry scales , they both lay eggs they both are cold blodded , they breathe through lungs & they both have three or four chambered heart

    1Thank You

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    • Posted by Shivam . 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Sangita???? Ankita 7 years, 2 months ago

    the chemical energy of the body changes into muscular energy and this changes into kinetic enegy

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    • Posted by Akanksha Kumari? 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Gifty Rajesh 7 years, 2 months ago

    So, sides of a square are 10m,10m,10m,10m 2min 20sec = 2×60+20 =140sec Now 140 can be written as 40+40+40+20 We are given that he covered the whole field in 40 sec. So, 3 times he moved along the field in 120 sec. In remaining 20sec he moved half of the field. i.e., In a square ABCD we have to draw a diagonal AC. Now, AC=root of AB+BC =root of 10×10+10×10 =root of 100+100 =root of 200 =14.14m

    1Thank You

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    • Posted by Divyam Walia 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Anshika Gupta 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Dev Porwal 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Nitish Cool 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Rahul Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Amey Vikram Singh 7 years, 2 months ago

    Connective tissues are those tissues who cells are lossely packed in intercellular matrix its main function is to connect body organs and it act's as a packaging material

    0Thank You

    Aditya Kumar Dangi 7 years, 2 months ago

    Connective tissue is specialised to connect and anchor various body organ.

    0Thank You

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