Actually, both of them were like good and intimate friends. They spent most of the time together. She woke him up early in the morning and got him ready for school. She gave him a breakfast of stale bread with a little butter and sugar spread on it. She accompanied him to his school.

Humans and mammals such as monkey and apes have certain similarities in behaviours and anatomy.

This shows that humans possibly evolved from apes.

Similarities on the basis of behavior:

(i) Both can climb on trees.

(ii) Both secrete milk and carry their babies with them .

(iii) Both can run and walk.

(iv) Both use sound as a mode of communication.

Similarities on the basis of anatomy:

(i) They have warm blood and body hair are present on body.

(ii) They have different types of teeth.

(iii) Both are vertebrates .

(iv) Both have two feet and two hands.

Differences on the basis of behavior:

(i) Human beings earn money for their families but monkey and apes do not perform economic activities.
(ii) Humans walk upright while monkey any and apes cannot walks upright.
(iii) Humans prepare tools themselves while monkeys and apes do not prepare themselves.

(iv)Human walks on two feet while monkey and apes walk on four feet.

Differences on the basis of anatomy:

(i) Humans have larger body as compared to apes and monkeys.

(ii) Monkeys and apes have tails while humans have no tail.

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From the value of sin 0, we will obtain the value of sin 180.

We know that the exact value of sin 0 degree is 0.

So, Sin 180 degree is +(sin 0) which is equal to +(0)

Therefore, the value of sin 180 degrees = 0.

The value of sin pi can be derived from some other trigonometric angles and functions like sine and cosine functions from the <a href="https://byjus.com/maths/trigonometry-table/">trigonometry table</a>.

It is known that,

180° – 0° = 180° ———– (1)

270° – 90° = 180°———— (2)

Sine 180 Degree Derivation: Method 1

Now we can use the above expression (1) in terms of sine functions

From the supplementary angle identity,

Sin A = Sin (180° – A )

Therefore,

Sin ( 180° – A ) = Sin A

Sin ( 180° – 0° ) = Sin 0°

Sin 180° = 0 [ Since the value Sin 0° is 0]

When it comes to natural disasters like earthquakes, floods and tsunamis, decades of development like buildings, flyovers, dams, institutions, all get destroyed in an instant. Less people die but more become crippled. Thus, livelihoods are severely affected. So, as a country prone to natural disasters, we need to prepare ourselves with additional funds for such times.

As we are aware, a lot has been said and written about the cause of such natural disasters, global warming being one of them. Yet, no action is being taken. Vehicular traffic is one such reason that is contributing towards global warming throughout the world. Burning fossil fuels is yet another. Unplanned urbanization is another reason. But the root cause of all is man’s greed for more and more, as he is not prepared to spare even the earth where he lives in for the purpose.

Like many developed countries that are taking measures to be prepared, in India too we need to be proactive in our approach to tackle future disasters. Technology like advance warning systems, building buildings that can withstand earthquakes are just some of the things that we can do. Other than that, insurance schemes especially meant for natural disasters need to be introduced by the Government. The general masses also need to be educated about evacuation procedures. Government institutions, corporate, schools and colleges should have initiatives for the same. Because when a disaster strikes, help must be ready in an instant. We cannot lose time leveraging resources during such times. 

In the poem ‘A Photograph’ by Shirley Toulson the cardboard shows the poet an old photograph which was glued and stuck on it to preserve it.

The cardboard shows the daughter, her mother’s photograph taken when the mother had been 12 years old.

It helps the daughter to relive her mother’s laughter when she had talked about her childhood memories.

1. Direct Method

In this method, the formal definition of mean is used. The values of items are simply summed and divided by the number of observations.

Mean=∑X÷N

The formula for the direct method is as follows:

Mean= ∑fX/∑f

Here, ∑fX= Summation of the product of values of items with their corresponding frequencies

∑f= Summation of all the frequencies

The story 'The Address' is all about the address that the author had received from her mother years ago so that she can reclaim her belongings back after the the war. The whole plot develops from this address of Mrs Dorling 'House no:46 Marconi street'.

It was hard for author to believe that his grand mother was once young and pretty as when he opened his eyes he saw his grand mother old, so terribly old that one could not grow more older. Her skin was a criss cross of wrinkles spread all over her face. Therefore it was beyond the expectations of author to believe that his grandmother had been pretty once.

A mole is defined as the mass of the substance which consists of the equal quantity of basic units. Example atoms in 12 grams are the same as 12C. The basic units can be molecules, atoms or formula units based on the substance. A mole fraction indicates the number of chemical elements. One mole of any substance is equal to the value of 6.023 x 10²³ (Avagadro number). It can be used to measure the products obtained from the chemical reaction. The unit is denoted by mol.

The formula for the number of moles formula is expressed as
Number of Moles = mass of substance/, the mass of one mole

Example 1: Determine the number of moles in 95g of MnO₂.

Solution:

Given

Mass of MnO₂ = 95g

Mass of one mole MnO2 = 86.94g

Number of moles formula is

Number of moles = Mass of substance / Mass of one mole

Number of moles = 95 / 86.94

Number of moles = 1.092 mol

It is given that,

Vector, a^ =3i^+4j^

Vector, b^ = 2i^-3j^

We have to find the component of vector a along the direction of vector b.

.............(1)

N= -1.6

So, the component of vector a =3 i+4 j along the direction of b =2 i - 3 j is -1.6.

Hence, this is the required solution.

• It is most necessary for a country to have a clear demarcation of powers and responsibilities in the constitution. Powers of all institutions like the legislature, the executive and the judiciary and even independent statutory bodies like the Election Commission are demarcated.
•  
• It is to ensure that no single institution acquires monopoly of power. This ensures that even if one institution wants to subvert the constitution, others can check its transgressions.
• For example, in Indian Constitution the principle of check and balance is applied to secure the fundamental rights to its citizens. In the absence of such a demarcation there would be problems to the citizens and the laws will be unjust and unfair. A constitution is to specify who has the power to make decisions in a society.
• It decides how the government will be constituted. In a democratic constitution, it sets some limits on what a government can impose on its citizens. These limits are fundamental in the sense that government may never tresspass them.
• The constitution shows how the organs of government should relate to each other. In a federal form of government, the judiciary is given a specific place. It can declare any law unconstitutional or ultra vires if it is not in the tune with the provisions of the constitution. If there was no demarcation of powers in centreand states, there would be a crisis and the federal set up would get strained.

All living organisms are made of chemicals which belong to various classes and have different sizes and functions. In the cells, these chemicals are constantly being made and changed into some other biomolecules. These conversions or chemical reactions taking place in the body are collectively known as metabolism. All plants, animals, fungi and microbes exhibit metabolism. Non-living objects do not exhibit metabolism. So we can say metabolism is a defining feature of all living organisms without exception.
Metabolic reactions can be demonstrated outside the body in a test-tube. A metabolic reaction preformed in a test-tube (in vitro) is neither living nor non-living but surely living reaction.

No Separate Entity

• According to the accounting system, the owner and the business are considered as two separate entities.
• But the law does not make any distinction between the sole trader and its business.
• Hence, without the sole trader, the business has no identity because he is the only person who performs all the business activities.

The sole proprietorship is the simplest business form under which one can operate a business. The sole proprietorship is not a legal entity. It simply refers to a person who owns the business and is personally responsible for its debts. A sole proprietorship can operate under the name of its owner or it can do business 

answer

(1) Association is partial (2) It is an artificial creation. (3) It is formed by individuals for the pursuitoftheirindividual interest. (4) Significance of association for a person is so log as it serves their purpose. (5) Membership of association is voluntary. We choose our associations. (6) Community sentiment is not an essential feature. (7) It has got its office bearer to manage the affairs (8) It works mostly through written laws and rules

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The head teacher had summoned Albert in order to ask him to leave the school. The reasons behind expelling Albert was that his presence in the classroom was disruptive of the discipline and decorum expected in a classroom. It created animosity in the class and was a source of distraction for the teacher. It hampered the teacher in his objective of teaching the students and also disturbed the students in their task of learning. Einstein's refusal to cooperate in the class,behave according to the teacher's dictum and being rebellious was obstructive in the way of carrying out work in the classroom.
Albert could feel the medical certificate burning a hole in his pocket because he was going to leave anyway.

The narrator's grandmother was a very religious lady. She used to hobble around the house telling the beads of her rosary. Even as she bathed him, she would recite her morning prayers and hope that he would learn it too. While the narrator was at school, she would sit in the temple and recite scriptures. Even after the narrator went to the University, she would sit by her spinning wheel and recite prayers. Even at the time of her death, she did not waste her time talking to her family, but went on saying her prayers.

• During the revolt only few proclamations and ‘ishtahars’ (notification) were issued by rebel leader to propagate their ideas and persuade people to join the revolt.
• So it is very difficult to reconstruct what happened in 1857 and what were the demands of rebels. The only way to know in detail about revolt of 1857 is by going through details of British officials and to know their point of view.
• Proclamation issued by rebel leader appealed to all sections of the population irrespective of cast and creed. The rebellion was seen as a war in which both Hindus and Muslims were equally to lose or gain.
• It was remarkable that during uprising, religious division between Hindus and Muslims was hardly noticeable despite the attempt of British government.

Nomenclature is a science of providing distinct and proper names to organism so that they can be easily recognized and differentiated from others. 

In trinomial nomenclature, the names of taxa have three parts. The first part is the name of genus, the second part is the name of species and third part is the name of subspecies. For example, <i>Brassica oleracea botrytis</i>.

So, the correct answer is 'Subspecies'.

In biology, trinomial nomenclature is used to name living things at a rank lower than species. The term trinomial nomenclature means "three-part name" or "system of three-part names". If living things r than species get a scientific name, each name has three parts. Binomial Nomenclature: Binomial nomenclature was given by carolus linnaecus in his tenth edition of system natura published in 1758. Binomial nomenclature is defined as system of nomenclature that denote species of living organism.

Labour-intensive production

In Economics, labour is the all human efforts in the production. Labour does not only mean the labourers in an industrial site. If we take an example of a tourist resort, labour includes the receptionists, bell boys, bartenders, waiters, admin assistants, telephone operators etc.

Labour-intensive production means that the way that a good or service is produced depends more heavily on labour than the other factors of production, such as capital.

Labour intensive method of production is usually used for individual or personalised products, or to produce on a small scale.

Examples of labour-intensive production are hotels, restaurants, small scale farming, pole-and-line fishing, mining etc.

Capital-intensive

‘Capital’ refers to the equipment, machinery, vehicles and so on that a business uses to make its product or service. This meaning is also consistent with the meaning that the capital is the resources provided by the owner/owners to the business to do the business.
Capital-intensive processes are those that require a relatively high level of capital investment compared to the labour cost.
These processes are more likely to be highly automated and to be used to produce on a large scale.
An industry that is capital intensive is – oil refining, manufacturing.

The three ways in which the author’s grandmother spent her days after he grew up are:

1. She lived alone in her room as she had accepted her loneliness quietly.
2. She sat at her spinning wheel reciting prayers.
3. In the afternoon, she would feed the sparrows for half an hour.