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The preconditions are the basic framework based on which the system performs. The preconditions for development are education, health service, roads, communications and others. The satisfaction of the condition for development pushes the .....

Frankly speaking, the division of state on the basis of ethnic communities does not identify the different races. The division of states on the basis of ethnic communities does not address the rights, voices and choices of each and every caste in .....

On the other hand,  - It created a huge gap between the society members, i. e. rich and poor. - The industrial society created the division in the society which further created disputes.  - The factory workers were severely .....

The value of g at the centre of the earth is 0 m/s2 . If you are at the centre of the earth, you are being pulled out radially in every direction, and the force in each direction has an exact but opposite force. These cancel each other to .....

The value of acceleration due to gravity is minimum on equators of the earth. As we know that acceleration due to gravity is inversely proportional to the distance from the centre of the earth (i.e. g ∝ 1/r2),  gravity is minimum .....

Gravitational force between the Earth and an object is known as Earth's gravity or weight of the .....

Gravity exists everywhere in the universe. It is defined as the force that attracts two bodies to each other. Astronauts in space do not feel its effects, but it exists in a small amount. Gravity is what it holds the moon in orbit around the .....

The formula to calculate the magnitude of the gravitational force between the earth and the object on the surface of the earth is written as: F = GMm/R2 where,    F = gravitational force G = gravitational constant [G = 6.67 × .....

We have, h = ut + 1/2 at2 [∵ s = ut + 1/2 at2 here, s = h = distance] or, 80   = 0 ⨯ 4 + 1/2 a ⨯ (4)2 or, 80 = 8a or, a = 10 m/s2 Therefore, acceleration due to gravity of the stone is 10 m/ s 2 .....

We have,  F = Gm1m2/d2     = (6.67 × 10−11⨯ 30 ⨯ 30)/22      = 1.5 ⨯ 10-8 N Therefore, the two boys are attracting each other with 1.5 ⨉ 10-8 N .....

Macronutrients:

A regret letter is also called a refusal letter. It is used to express unpleasant news in a tactful way. Regret letters are frequently used to inform job applicants that they did not receive a job for which they applied. They are also used by .....

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Hello! Would you mind posting the text as .....

Blue Whale They are famous because they are largest animal in the .....

Unisexual organisms The organisms in which male and female reproductive system are present in different individuals are called unisexual organisms. We can also say that the organisms in which male and female sexes are separate are called .....

An artificial greenhouse is a man-made greenhouse. It is a house made of glass or plastic on a metallic frame. It is mainly used to grow offseason plants. In the artificial greenhouse, the glass and plastic allow the only short wave to pass but .....

Solution:   ( x0 + y0) / ( 9 -1 x 32)  = ( 1 + 1 )/ ( 1/9 x 9 )            [ a-1 = 1/a      and a0 = 1 ]    = 2 / ( 9 / 9 )  =  2 / 1  = .....

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3. Immigration of genes: It means the migration into a population from other populations with different gene .....

All human beings belong to same species. But look at the figure. Some have blue eyes, some have green eyes and some have brown eyes. Hence, variation may be defined as the differences among the individual of the same .....

Wilhelm Johannsen coined the word 'gene' in .....

Mendelian laws of inheritance are statements about the way certain characteristics are transmitted from one generation to another in an organism.  For his experiments, Mendel used ordinary pea plants. Among the traits that Mendel studied .....

3) Mendel concentrated only on one character at a time. 4) He kept accurate records (both qualitative and quantitative). 5) He used statistical methods for analyzing the results. 6) The characters selected by Mendel were present on different .....

 A group of genetic disorders in which there is partial or total lack of the pigment melanin in the eyes, skin, and .....

The tongue is the most flexible muscle in the human body. It can be rolled, turned over, bent or even twisted.  Bending of tongue is one of the hereditary characters. It is the ability to roll the lateral edges of .....

Look at another picture of an earlobe given below. You can see that the ear is attached directly to the side of the head. This type of earlobe is called as a joint earlobe or attached .....

Plants hybridize much more frequently and successfully than animals do. Pollen from flowering plants disperses widely and may land on flowers of other .....

                Methane(CH4) Methane is the simplest aliphatic hydrocarbons because the carbon and hydrogen are combined together in a branched .....

When they grow gradually, later they differ from each other and finally, change into respective animals which are similar to their parents. The similarities in the embryonic stages of those animals justify the statement that ontogeny is .....

The member states themselves are the sources of funding to the SAARC. The contribution of the member states is presented in the table below: Nations Percentage India 30.32 Pakistan  22.53 Nepal, .....

Insecticides are substances used to kill insects.  They include ovicides and larvicides used against insect eggs and larvae, respectively. As Nepal is the agricultural country, where more than 80% of the land is used in .....

Similarly, there is a provision that women shall have the right to participate in all bodies of the State on the basis of the principle of proportional inclusion. Women shall have the right to obtain special opportunity in education, health, .....

Here, ∆QRS is an equilateral triangle and PQST is a rhombus. Join PS. Then all three triangles ∆QRS , ∆PQS and ∆PST are equal an equilateral. Now area of trapezium PQRT = ∆QRS + ∆PQS + ∆PST = .....

Here, ∡QSP = ∡QRS ........... (i) [ opposite angles of parallelogram are equal] ∡QSP + ∡QRS = 180∘ [ sum of opposite sites of cyclic quadrilateral is 180] or, 2∡QSP = 180∘ [ from (i)] or, ∡QSP = 180∘/2 = .....

An amphoteric compound is a compound that can act either as an acid or as a base in a chemical reaction. A water is an amphoteric compound as it can self-ionize to a small extent. What that means is that a water molecule is .....

Upthrust is creating a force that opposes the weight of the football and the force applied to the football. However, this difference in the weight of the displaced water and the ball is what makes the force so strong and difficult to press .....

The glass chamber can't be made a vacuum. As in vacuum condition, the filament will evaporate because of very high temperature, making the bulb unusable. .....

Some substances break down due to heat. For example: calcium carbonate (CaCO3) can be decomposed into calcium oxide (CaO) and carbon dioxide (CO2) by applying .....

Join BD. Now,   Statement    Reason (i) ∡AOD = 2∡ABD  (i) Centre angle is double of the inscribed angle. (ii) ∡BOC = 2∡BDC  (ii) Centre angle is double of the inscribed .....

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    Statement                                                    Reason (i) ∡BCD .....

Here, PQRS is a //gm. So,<S = <Q, Again, <U = < Q   [ angle on same arc PT] And, < Q  = < UTQ,  [ alternate angles] From these, we get <S  = < UTQ. Hence UTRS is a cyclic qd. as opposit .....