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Difference between biotic and abiotic environment

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Living components like plants, animals and microbes from the biotic environemnt while nonliving components like soil, water, temperature forms the abiotic components of environment.
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Odd number in divisible by 2

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Ans.No, Odd numbers are not divisible by 2.
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Is the process of photosynthesis a chemical change?plss guys urgent tmr is my science exam

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Ans. Yes it is.
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Is the breaking down of ozone into oxygen a chemical change?plss guys urgent tmr is my science exam

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Ans. Yes it is chemical change.
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How do a electric bell work? plss guys urgent tmr is my science exam

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Ans. An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. When an electric current flows through the coils, the rods become magnetic and attract a piece of iron attached to a clapper. The clapper hits the bell and makes it ring.
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How to find time taken for one oscillation?

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Time taken in one oscillation is called frequency. It can be calcuated by dividing the number of oscillation by time taken.
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How is sewage disposed in an aeroplane?

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Ans. Waste water created in flight is stored in a holding tank on the aircraft until the plane sets down. When it's on the ground, a service truck rolls up and pumps the contents of the plane's holding tank aboard. A waste station at the airport serves to empty the truck's tank into the community waste water processing system.
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literary & archaeological sources of modern period

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Why led the British to record every aspect of their administration in india? do you think they were answerable to somebody? give reasons to support your argument.

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Why britisher conducted so many surveys in india

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you wish to become a sports star when you grow up but your father wants you be an engineer. Write a shoet diary entry in about 5060 words expressing your feelings on the issue.

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How is cricket different from other team games?

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Ans. Cricket is Different From Other Team Games in any ways:
 Unlike other modern games like football, baseball or tennis test cricket is a long drawnout game lasting 5 days and can even then end in a draw. Even its shortened version of limited over's takes double the time as compared to baseball.
 Unlike other games where the size of the playing field is specified, in cricket only the size of the pitch is specified as 22 yards, the size of the ball, bat, bail and stumps is regulated, but the size and shape of the ground are not specified. The playing field can vary from round to oval to rectangular.
 Unlike golf and tennis, cricket has refused to remake its tools with industrial manmade materials like plastic, fibre glass and metal
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Some example of warm and cold ocean currents.

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Warm currents:
 North equitorial current
 Japan current
 North pacific current
 Monsoon drift
Cold currents:
 West wind drift
 Canary current
 Greenland current
 Labrador current
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Gulf stream, Somali.kuroshio
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On which date is Odisha hit by a cyclone in in the year 1999 ?

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29oct1999
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Define Global Warming

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Global Warming is the increase of Earth's average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. This is a type of greenhouse effect.
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What is the rotational symmetry of a parallelogram?

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Diagonally opposite angles are equal. Opposite sides are of equal length. Opposite sides are parallel. The diagonals bisect each other. It has no lines of symmetry. Order of rotational symmetry: 2.
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what is the area of an equilateral triangle

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Ans.
Area of Equilateral Triangle : {tex} {\sqrt 3a^2\over 4}{/tex}
Where a is side of Triangle.
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Public opinion is subject to A change over a period of time. B no change over a period of time C neither A nor B

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find the missing value
area of triangle = 87cm
base = 15cm
height =?

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1/2 *base *height = area
1/2*15*height= 87
height=1/15*2*87=11.6
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Ans. Area of triangle = 87cm^{2}
base = 15 cm
Height = ?
We know,
{tex}Area \space of \space triangle = {1\over 2}\times base\times height {/tex}
=> {tex}87 = {1\over 2}\times 15\times Height {/tex}
{tex}=> Height = {1\over 15}\times 2\times 87 {/tex}=11.6cm
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which type of mirror is used in reflector of torches?

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Concave mirror
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Sketch the cross section of soil and label the various layers and Make a sketch showing groundwater and water table. Label it also

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Is transpiration harmful for plants? True or false? And why?

So, why It is called nessecary evil
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Transpiration removes extra water from plants through water vapour. It also creates a sunction pull which helps to lift up water from the soil to the xylem of plants.
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No, transpiration is not harmful to plants because it is the process by which excess amount of water is sending out in the form of vapour...
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Explain how groundwater is recharged?

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Ans. Rain water and the water from water bodies on earth’s surface pass through the soil by the process of infiltration. The infiltrated water then gets accumulated in the aquifer deep under the ground. There are some layers of impermeable rocks which prevent the water in the aquifer from seeping down further. In this way, the ground water is recharged.
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How is river Yamuna called when it enters Pakistan?

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Determin the value of x
{[3]^{3}}^{7 }=3^{7x}

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{tex}{\left\{ {{{\left( 3 \right)}^3}} \right\}^7} = {3^{7x}}{/tex}
{tex}{3^{21}} = {3^{7x}}{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \left[ {{\mkern 1mu} {{\left( {{a^m}} \right)}^n} = {a^{mn}}} \right]{/tex}
{tex}7x = 21{/tex}
{tex}x = {{21} \over 7}{/tex}
{tex}x = 3{/tex}
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Simplify the following expression and find it's value when p=3 and q=2
3[pq+p^{2}]+4pq2p^{2}+q2

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{tex}  3\left[ {pq + {p^2}} \right] + 4pq  2{p^2} + q  2{/tex}
{tex}on{\rm{ }}\,putting\,{\rm{ }}p = 3{\rm{ }}\,and{\rm{ }}\,q = 2{/tex}
{tex}={\rm{  3}}\left[ {3 \times 2 + {{\left( 3 \right)}^2}} \right] + 4 \times 3 \times 2  2 \times {\left( 3 \right)^2} + 2  2{/tex}
{tex} =  3\left[ {6 + 9} \right] + 24  18{/tex}
{tex} =  45 + 6{/tex}
{tex} =  39{/tex}
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Simplify the following expression and find it's value when x=3
17x12x^{2}+15x19x^{4}+13x^{4}3x^{2}

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{tex}  17x  12{x^2} + 15x  19{x^4} + 13{x^4}  3{x^2}{/tex}
{tex}c{\mathop{\rm lub}} \,the\,like\,terms{/tex}
{tex} =  17x + 15x  12{x^2}  3{x^2}  19{x^4} + 13{x^4}{/tex}
{tex} =  2x  15{x^2}  6{x^4}{/tex}
{tex}on\,putting\,x = 3{/tex}
{tex}=  2\left( 3 \right)  15{\left( 3 \right)^2}  6{\left( 3 \right)^4}{/tex}
{tex} =  6  15 \times 9  6 \times 81{/tex}
{tex} =  6  135  481{/tex}
{tex} =  627{/tex}
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Simplify the following experssion 2[a^{2}+ab]+3+ab and find it's value when a=2 and b=3

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{tex}  2\left[ {{a^2} + ab} \right] + 3 + ab{/tex}
{tex}on\,putting\,a = 2\,and\,b = 3{/tex}
{tex} =  2\left[ {{{\left( 2 \right)}^2} + 2 \times 3} \right] + 3 + 2 \times 3{/tex}
{tex} =  2\left[ {4 + 6} \right] + 3 + 6{/tex}
{tex} =  2 \times 10 + 9{/tex}
{tex} =  20 + 9{/tex}
{tex} =  11{/tex}
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