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    • Posted by Sachin Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    • Fossil fuels are formed by natural processes of decomposition of dead and buried plants, animals and other organism.
    • They got buried under oceans and layers of earth many millions of years ago and with time, high pressure and high temperature they formed fossil fuels.
    • The fossil fuels are found in mines.
    • Fossil fuels are considered as non-renewable sources of energy.

    3Thank You

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    • Posted by Pragyan Priyadarshini Nayak 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Ankit Ambasta 7 years, 2 months ago

    [1]derivation for equation of motion [2]examples from ch-8 [3]derivation for kinetic energy [4]laws of motion [5]nitrogen cycle [6]types of tissues, their location, function [7]define–1N,1J , [8]definations

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    • Posted by Aradhya Singh 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    ATP(adenosine triphosphate), that is present in the mitochondria is called the energy currency of the cell.This is so because it provides energy for various chemical and bio-chemical reactions taking place in our body.this reactions are very essential for the timely maintenance of our body, so ATP plays a vital role in our body being the energy currency.

    3Thank You

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    • Posted by Manish Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    Total momentum will be the product of the combined mass of gun and bullet (M) and the velocity of the gun.
    If the gun is at rest, the velocity would be zero.
    So momentum = (mbullet + M gun )) x v = M x 0 = 0.

    2Thank You

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    • Posted by Chauhan Anshuman 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Prem Jain 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Ankit Ambasta 7 years, 2 months ago

    By heating

    0Thank You

    Yogita Ingle 7 years, 2 months ago

    If a solution cannot dissolve any more solute, it is called a saturated solution at that given temperature.

    When a saturated solution is heated, the quantity of solvent decreases and hence it becomes an unsaturated solution.

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    • Posted by Alwaz Hashim 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Gaurav Seth 7 years, 2 months ago

    Noise -

     1. The unpleasant sounds around us are called noise.
                2. noise is produced by the irregular vibrations of the sound producing source.
                3. e.g- horns of vehicles & running of mixer and grinder in kitchen.

    Music - 

    1. The sounds which are pleasant to hear are called musical sounds or music.
                  2. music are produced by the regular vibrations of the sound producing source.
                  3. e.g -strings of sitar & shehnai.

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    • Posted by Aditya Raj 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Ankit Ambasta 7 years, 2 months ago

    Alloy is a homogeneous mixture of two metals or a metal and a non metal .Example -steel.

    0Thank You

    Yogita Ingle 7 years, 2 months ago

    An alloy is a homogenous substance which can be made by melting of two or more elements (one of which is a metal). It is defined as a mixture of metals.
    Example: Brass is made of 35% zinc and 65% copper and is used for musical instruments, jewellery, faucets and decorative hardware.

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    • Posted by Khushi Boora 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Ankit Ambasta 7 years, 2 months ago

    Co2 is not stable

    1Thank You

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    • Posted by Himanshu Mathur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Himanshu Mathur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Ankit Ambasta 7 years, 2 months ago

    T=2d/v 3=2d/342 1026=2d 513=d Therefore distance of sorce of sound from object =513m

    3Thank You

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    • Posted by Himanshu Mathur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    Three naturally existing isotopes of hydrogen are tritium, deuterium, and protium.
    1H1, 1H2, 1H3

    3Thank You

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    • Posted by Himanshu Mathur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 2 months ago

    Sleeping Sickness or African trypanosomiasis is a parasitic disease that is caused by the parasite named Trypanosoma Brucie. It spreads through the bite of a fly called Tsetse which injects this disease into the human body. This fly has its origins from the African countries and hence the name. About 60 million people in this country are affected majorly by this disease.
    The disease causes several medical disorders such as swelling of the brain which sometimes might even result in fatal conditions. In later stages, the central nervous system is also affected by the attack of ‘sleeping sickness’ resulting in death.

    2Thank You

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    • Posted by Ruchi Bhardwaj 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Ankit Ambasta 7 years, 2 months ago

    Please thanks if u like.

    1Thank You

    Ankit Ambasta 7 years, 2 months ago

    Law of conservation of energy states that energy cannot be created or destroyed during a chemical reaction but it can transforms from one state to other . Example –When you throw a stone from distance then potential energy converted to kinetic energy (when it touches the ground) and sound.

    1Thank You

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    • Posted by Sohail Haider 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Ankit Ambasta 7 years, 2 months ago

    Please thanks if u like my answer

    1Thank You

    Ankit Ambasta 7 years, 2 months ago

    W=F×d . F=m×a. d=V²-U²/2a.W=m×a×V²-U²/2a.Kinetic energy =1/2mV²(U=0).

    1Thank You

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    • Posted by Arjun Ramesh 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Meghna Thapar 6 years, 1 month ago

    Characteristics of Meristematic Tissues:

    1. Their cells are similar in structure and have thin cellulose cell walls.
    2. The cells are active and have dense cytoplasm.
    3. They contain few vacuoles or no vacuoles at all.
    4. The meristematic cells are compactly arranged and do not contain any intercellular space between them.

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    • Posted by Muskan Rajwade 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Ankit Ambasta 7 years, 2 months ago

    Blood passes important nutrients and other stuff Fm. one part of body to other.

    2Thank You

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    • Posted by Vansh Tiger 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Deepak Yadav 7 years, 2 months ago

    Newton 1st law of motion is Every object remains in its state of rest or uniform motion, until and external force is applied on it. Newton first law of motion is also known as "law of interia". Newton second law of motion Rate of change of momentum is directly proportional to the force applied on it direction of force. Newton third law of motion Every action has equal and opposite reaction.

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    • Posted by Chaitanya Bhamare 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Aanchal Jaiswal 7 years, 2 months ago

    Hey leason don't asking like this type if questions understand

    1Thank You

    ANSWER

    • Posted by Arjun Ramesh 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Chaitanya Bhamare 7 years, 2 months ago

    Apical,intercalary,lateral,permanent meristmatics

    1Thank You

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    • Posted by Sukhvinder Kaur 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Khushi Boora 7 years, 2 months ago

    Plastid and mitochondria plastids help in photosynthesis and pollination. Mitochondria release energy in form of ATP (adenosine triphosphate).

    2Thank You

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    • Posted by Harshit Rawat 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Harshit Rawat 7 years, 2 months ago

    Its answer is 1/2kmv^2

    1Thank You

    ANSWER

    • Posted by Sandeep Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Riya Gupta 7 years, 2 months ago

    Your question is incorrect Both have same no. of molecule i.e. 1

    0Thank You

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    • Posted by Lawkush Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Yogita Panwar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Shreyansh Shakya 7 years, 2 months ago

    Because they have not as much strong immune system to defend microbes

    3Thank You

    ANSWER

    • Posted by Divya Mudaliar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Deepak Yadav 7 years, 2 months ago

    Water pollution is the contamination of water bodies, usually as a result of human activities. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater. Water pollution results when contaminants are introduced into the natural environment. For example, releasing inadequately treated wastewater into natural water bodies can lead to degradation of aquatic ecosystems. In turn, this can lead to public health problems for people living downstream. They may use the same polluted river water for drinking or bathing or irrigation. Water pollution is the leading worldwide cause of death and disease, e.g. due to water-borne diseases.[1][2] Water pollution can be grouped into surface water pollution. Marine pollution and nutrient pollution are subsets of water pollution. Sources of water pollution are either point sources and non-point sources. Point sources have one identifiable cause of the pollution, such as a storm drain, wastewater treatment plant or stream. Non-point sources are more diffuse, such as agricultural runoff.[3] Pollution is the result of the cumulative effect over time. All plants and organisms living in or being exposed to polluted water bodies can be impacted. The effects can damage individual species and impact the natural biological communities they are part of.

    1Thank You

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    • Posted by Arpit Dwivedi 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Riya Gupta 7 years, 2 months ago

    Isotopes are the atoms having same atomic number but different mass number, i.e. no.of neutron While Isobars are the atom having same mass no. but different atomic number.

    1Thank You

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    • Posted by Abhishek Pandey 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Riya Gupta 7 years, 2 months ago

    F=ma P=mv so , F=pa/v

    1Thank You

    ANSWER

    • Posted by Akhileshwar Ray 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Khushi Boora 7 years, 2 months ago

    Aristotle had divided living organisms into two kingdoms i.e., plantae and animalia .It becomes impossible because he didn't strictly fit certain organisms like euglena and viruses either under plant or animal Kingdom.

    2Thank You

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    • Posted by Hari Singh Rathore 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Aanchal Jaiswal 7 years, 2 months ago

    Anneelida phylum:- (1) bilaterally symmetrical (2) triploblastic (3) coelomatic (4) argon system (5) their body are sigmented (6)ex:- earthworm, nereis, leech

    1Thank You

    Amisha Rawat 7 years, 2 months ago

    Body is divided into head abdomen thorax they have rings all around there body eg leech earthworm

    1Thank You

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