(i) Discrimination can be defined as negative actions towards people.
(ii) Discrimination can happen the basis of colour, class, religion and gender.

1. Pacific Ocean
2. Atlantic Ocean

The types of diversity are 
(i) Land forms and Lifestyle diversity
(ii) Social diversity
(iii) Religions diversity
(iv) Linguistic diversity
(v) Cultural diversity

People speak different languages, eat different kinds of food, celebrate their own festivals and different cultures, worship in different ways, yet we live together. This is known as diversity.

(i) The city of lakes is known as Kancheepuram.
(ii) Hundreds of lakes were created for storing water around the town of Kanchi.
(iii) Hence, Kanchi came to be known as the district of lakes.

(i) The great bath was a large, rectangular tank in a courtyard. It may be the earliest example of a water-proof structure.
(ii) The bath was lined with bricks, coated with plaster and made water-tight using layers of natural bitumen.
(iii) There were steps on the north and south leading into the tank.
(iv) There were rooms on three sides.
(v) Water was drawn from the well, located in the courtyard and drained out after use.

(i) They had well covered drains.The drains were covered with slabs or bricks.
(ii) Each drain had a gentle slope so that water could flow.
(iii) Manholes were provided at regular intervals to clear the drains.
(iv) House drains passed below many lanes before finally emptying into the main : drains.
(v) Every house had its own soak pit, which collected all the sediments and allowed only the water to flow into the street drain.

Modern human beings; hunting and gathering society; still used crude stone implements.

(i) Potteries
(ii) Toys
(iii) Tools
(iv) Ornaments

(i) Some would have stayed back, without joining the hunting team.
(ii) So for their benefit, these pictures could have been drawn.
(iii) They might have done it as a part of their passtime.

(i) Tamil Nadu - Athirampakkam, Adichanallur, Paiyampalli
(ii) Karnataka - Hunasagi Valley
(iii) Mathya Pradesh - Bimbetka
(iv) Andra Pradesh - Brahmagiri

(i) History is a record of past events in chronological order.
(ii) The term History has been derived from the Greek word Istoria which means learning by enquiry.

Types of discrimination:
(a) Caste discrimination
(b) Gender discrimination
(c) Religious discrimination
(a) Gaste discrimination:
(i) Caste system is the most dominant reason for inequality and discrimination in India.
(ii) Many people in India have fought against caste oppression.
(iii) The most prominent among them was Dr.B.R.Ambedkar.
(iv) He fought actively for equality among the citizens of India.
(b) Gender discrimination:
(i) Gender discrimination refers to health, education, economic and political inequalities between men and women in India.
(ii) For example a girl is not allowed to go to college after finishing her schooling.
(iii) Most of the girls are not allowed to select a career of their choice, rather they are forced into marriage.
(iv) In some families, girls are not allowed to wear modern dresses while boys in such families often wear modern dresses.
(c) Religious discrimination:
(i) Religions discrimination is unequal treatment of an individual or group based on their beliefs.
(ii) Religious discrimination has been around for a long time.
(iii) There have been problems between people of different religions for thousands of years.
(iv) Some people are not allowed to enter in public places; especially the places of worship, because they belong to another religion.
(v) Some religious people often end up in conflict with each other because of their rituals and way of life.

(i) Mesopotamian civilisation is the earliest civilisation in the world.  
(ii) It is 6500 years old.
(iii) Now a days the city of Mesopotamia is called Iraq.

(i) The invention of wheel by human is considered to be the foremost invention,
(ii) The invention of wheel made pot making easier.
(iii) The wheel helps to man one place to another place.
(iv) It is used to transportation in trading goods.
(v) In modern days the wheel is most significance in Transport facilities.
(vi) It also used in function of machine in several factories

(i) In ancient period, the people lived in caves.
(ii) Hunting was their main occupation.
(iii) Caves did not live in such a safe environment.
(iv) There might have been changes of wild animals entering caves.
(v) But they realised that dogs could help them prevent the entry of such dangerous animal by sniffing skill.
(vi) Hence they started domesticating dog for their protection and hunting activities.

(i) Diversities are seen in landscapes, climate, natural vegetation and soil.
(ii) Diversities are seen in languages, races, religion, customs and caste. 
(iii) And also diversities are seen in habits and heritage, food and dress, art and architecture.
(iv) Irrespective of differences in all the above, we all take pride in calling ourselves as Indians.
(v) The feeling of oneness and unity among the people of various religious, castes of a country is called unity in diversity.

(i) According to census of India 2001, India has 122 major languages and 1599 other languages.
(ii) Four major Indian language families are Indo-Aryan, Dravidian, Austroasiatic, and Sino Tibetian. Tamil is the oldest Dravidian language.
(iii) Historically, the Portuguese, the Dutch, the British, the Danish and the French came to India for trade and their occupation of India or some parts of it has left behind a certain impact upon the culture and language of the people.
(iv) Because the British ruled over the entire country for over three hundred years before independence in 1947, the English language gained prominence in India. In due course, English has emerged as an important language and a medium of instruction in schools and colleges.
(v) It is widely used in official communication and daily life.
Cultural Diversity :
(i) The term 'culture' refers to customs and practices of people, their language, their dress code, cuisine, religion, social habits, music, art, and architecture.
(ii) The culture of a group of people is reflected in their social behavior and interactions.
(iii) The group identity fostered by social patterns is unique to a group.
(iv) Art and architecture are an integral part of every community.
(v) It develops as a part of culture and tradition of a community.
(vi) Each of the 29 states and 7 Union territories of India has rich traditions and unique ways of artistic expression.

Plateaus:
(i) Plateaus are the elevated portions of the earth that have flat surfaces bounded by steep slopes.
(ii) The elevation of plateaus may be a few hundred metre or several thousand metre.
(iii) Tibetan plateau is the highest plateau in the world.
(iv) So, it is called as the 'Roof of the world'.
(v) The flat lopped part of the plateau is called tableland.
(vi) The plateaus are generally rich in minerals.
(vii) The Chota Nagpur plateau is one of the mineral rich plateaus in India.
(viii) Therefore, rnining is one of the major aclivities of the people living here.
(ix) The deccan plateau in peninsular india is of volcanic origin. Dharmapuri plateau, coimbatore plateau, madurai plateau are found in tamil nadu.

i) I is true, II is wrong