The sea water is heated a very little during the day.  And, it is cooled a very little during the night.  So, the temperature of the sea remains almost the .....

The demerits or aminocentesis are: Mother may experience cramps, pain or bleeding. There is also risk of infection. There is also be least chance of miscarriage after .....

The element is a pure form of matter or substance which can neither be decomposed into simple substance nor be build from any other simple substance oridinarily by physical or chemical means. Example    all the substance given in the .....

Accidently, our tissues or organ may gets damaged due to certain regions. That damaged organs may be replaced by organ of other people. This method of tansplanting new organ from donor to the pateint is called organ transplantation. This process .....

Sometimes, we suffer from diseases like common cold, typhoid, diarrhoea, etc. This is due to entrance of  a pathogens in our body. Pathogens are foreign bodies that releases toxic chemical or substances in our body. These toxic substances .....

During poultryfarming, one should follow several steps. Incubation and brooding are two of them. After incubating an eggs for about 21 days, eggs hatch into young broods. These broods are both male and female. Female broods under 1 year old are .....

The main functions of medulla oblongata .....

Blind spot is area of retina where optic nerve leaves.

There are no photoreceptor .....

Ionic theory was put forwarded by Arrhenius which states that "when electrolytes(acid ,base,salts) are dissolve in water it splits into positive and negative ions." and the positive ion is equal to negative .....

The word coelom means cavity. During the development of frog,this cavity is formed after the mesoderm splits.  The mesodermal sheet splits from the middle into two layers forming a cavity. The layers are:  parietal layer and .....

Mesoderm is the middle layer.

The cells here have been transformed from micromeres and megameres.

This process is .....

The neural cells become thickened.

They are arranged in plate like structure.

This arrangement is known as neural .....

During the first step of granulation i.e. epiboly,

the outgrowth of micromeres takes place as it divides and redivides.

Here, micromeres move and roll over megameres.

.....

The albuminous fluid is secreted by surrounding blastomeres.

The significance of blastocoels is that, it exerts peripheral pressure towards cells and helps in movement.

.....

1. Bowman's .....

Blood consists of plasma, RBC, WBC and platelets. In RBC, there is a respiratory pigment called haemoglobin ( Hb). Haemoglobin has high affinity with oxygen. Due to this property oxygen xombines with haemoglobin to form .....

Unstraited muscles are not under our control. As they are controlled by autonomic nervous system. They are found in visceral organs. Such as alimentary canal like stomach, intestine, liver, urinary bladder, etc. But it is absent in .....

Mast cells are present in areolar tissues. These tissues are found in blood vessels, muscles, skin, alimentary canal, nerve fibres, .....

Connective tissues are composed of three different components; Cells, Fibres and Matrix. Fibres are non-living products of the cells. They are widely distributed in the matrix. They are of three types. One of them is white fibres. White fibres .....

Scientists from 100 countries have established strategies of wildlife.

Some species are about to extinct.

So, every possible effort should be made to preserve them.

There should be proper management of wild life in their .....

Migration menas to move from one place to another place. Migration takes place for different purposes such as, for food, shelter,in search of breedng place. Many birds migrate time to time and season to season. In Nepal, 12 migratory birds are .....

The chemical substances that cause pollution is called pollutants ( eg. smoke, Carbondioxide). Pollutants may be water pollutants, soil pollutants or air pollutants. Smog is a air pollutant. It is the combination of smoke and fog. Simply, it is .....

There are 9 phyla of invertebrates. One is Platyhelminthes. All the helminths belong to phylum paltyhelminthes. These helminthes are parasitic worms. Thus, helminthology is the branch of zoology that deals with the study of helminths; specially .....

As I have already said, the evolution in horses started from Eohippus.

Then through,  Mesohippus, Parahippus, Meryippus, Pliohippus to the modern horse.

Modern horse is also called ‘Eqqus’.

The evolution .....

Biology is also related to physics. Endoskeleton is based on physical process. Example - contraction of muscle. Structure and function of eye can be studied only with knowledge of optics. Light includes different patterns of response in plants .....

Natural selection is also known as survival of the fittest.    According to Darwin, some organisms are born with unmatched potentials to cope with  changing factors in the environment. Such organisms cannot adjust in the .....

Histology is composed of two Greek words; Histo and logous. Histo stands for tissues and  Logos stands for study. Thus,Histology is the branch of zoology that deals with the study of cells and .....

Both grafting and layering are fast, cheap and easy methods of reproduction.  These methods are further important for the plants which do not have viable seeds for .....

Sydney is not the capital city of Australia! The correct answer is actually .....

नेपाल एक बहुजातीय, बहुधार्मिक,बहुसास्कृतिक सम्पदाले भरिपूर्ण देश हो ।  यहाँ बसन्त ऋतुमा .....

Basically,  Kilo = 1000. For example, 1 kilogram = 1000 grams 1 kilometer = 1000 .....

Now,  sin A is the ratio of perpendicular and the hypotenuse of the right angled triangle. That means, sinA = perpendicular/ hypotenuse = PQ / .....

Yes, it is a good .....

In positive economics, being facts, we ask the question “What .....

A place for keeping goats .....

While pulling an object, the vertical component of the force applied acts in upward direction which decreases the apparent weight of the object in roller. i.e.                         .....

You may know, The area of square = length2 Let length of square be 'x' Therefore, x2 = 49 cm2 x = √(7 cm * 7cm)     Give it a try to calculate the .....

Look at the map of Pakistan. Find out the capital city .....

Book keeping is an art and science to records the finanacial transactions on the book of journal account. It is the process of analysing, classifying, and recording transactions for the find out the  financial .....

To convert the perentage into numbers, Divide the given number by 100 and, Then multiply the result by given percent. i.e. 10 % of 1000567 = 1000567 * 10        100 Now, try to solve .....

Air is invisible because it is a gas, and gas particles generally allow light to pass through them and they are so spread apart.  Gases expand to fill any container they are in, as they do not hold a shape; therefore, it is usually easy to .....

Here given, Load = 1200 N Load Distance = 25 cm Effort Distance = 60 cm Effort = ? We know from the principle of lever, Effort = load ×load distanceeffort distance or, Effort = 1200 ×2560 = 20 ⨉ 25 = 500 .....

please send the complete .....

During 20th century, the city of Kathmandu is named after Kasthamandap temple. During medieval times, the city was sometimes called Kantipur (कान्तिपुर). Can you find the meaning of Kasthamandap and .....

Wo we are? Aren't we the wealth of our nation? We work for the progress of our country.  We have manu natural resources like forests, rivers, lakes, temples. Aren't these all the wealth of our nation. The nation could utilize these .....

Can you find its height and where is it .....

Nepal is one of the underdeveloped countries of the world. There are different social problems and evils in the society. Caste Discrimination was the root cause of the 'civil war' in Nepal. It is also one of the major social .....

In this question, you have to let, x+y=a  and x-y=b. Then the given equations becomes, 14a+3b=5 ..................i) and, 21a-b=2    or, b=21-2a.................ii) Now substituite value of b from equation ii) in i) and get a .....

The Largest Animal Ever: The Blue .....

Tom and Jerry and Mickey Mouse are the most famous cartoons .....