When prejudice gets stronger, it develops into a stereotype. stereotype is a false view or idea about something.

(i) A continent is a very large area of land with various physical features such as mountains, plateaus, plains, rivers and seas and various types of weather patterns
(ii) India has all of them.
(iii) So, India is known as a sub-continent.

(i) Go as a group and hunt the prey.
(ii) Dig a pit and trap the animals and hunt.

(i) We should understand the life style of olden Age people with the help of museum.
(ii) Research students are get more information for museum

The statement is true, because, at the poles the distance around the earth is zero, and zero divided by 24 hours result in a speed is zero.
\(\therefore \text { Velocity }=\frac{\text { Distance }(0)}{\text { Time }(24)}=\frac{0}{24}=0\)

(i) Red Sea - It is named Red sea because it contains a Cyanobacteria which turns the normally blue-green water a reddish one. It gets connected to the ocean without even one river meeting the sea.
(ii) Black Sea - The Black Sea was first named by the ancient greeks as in hospitable sea. The sea got this reputation because it was different to navigate and hostile tribes inhabited its shores. After the successful development of the coast by the Greek colonists, the sea was named hospitable sea.
(iii) Dead Sea - The Dead Sea is roughly 8.6 times saltier than the ocean. This salinity makes for a harsh environment in which animals cannot flourish.

(i) Mountains make up more than a quarter of the planet's land mass. These surfaces provide resources for nearly 700 million people through out the world.
(ii) Mountains provide energy resources, food and water to people all around the world.
(iii) But climate change could cause mountains to shrink.
(iv) Deforestation has also been a threat while natural disasters often damage many mountains.
(v) Mountains are among the most beautiful land masses in the world. So like conservation of forests, conservation of mountains also equally important.

Prepare slogans, posters and placards to celebrate International Mountain Day.
(i) "Mountains are among the most beautiful land masses in the world."
(ii) "Mountains are beautiful as they rise up above the clouds and show just how grand the world can be."
(iii) "Great things are done when men and mountains meet."
(iv) "How glorious a greeting the Sun gives the mountains."
(v) "Mountains are earth's undecaying monuments."
(vi) "The mountains, forests and seas render men savage, they develop fierce, but yet do not destroy the human. "
(vii) "Men stumble over pebbles, never over mountains."
(viii) "Each fresh peak ascended teaches something."
(ix) "Mountains are the beginning and end of all natural scenery."
(x) "He who climbs upon the highest mountains laughs at all tragedies, real or imaginary.

1. Valley
2. Third Order
3. Erosion

a. Mercury
b. Jupiter
c. Uranus
d. Mars

(i) By 1800 BCE, the Harappan culture had started declining.
(ii) It is assumed that the civilization met with
(a) repeated floods
(b) ecological changes
(c) invasions
(d) natural calamity
(e) climatic changes
(f) deforestation
(g) an epidemic might have disturbed the civilization.

(i) A naval dockyard has been discovered in Lothal in Gujarat. It shows the maritime activities of the Indus people.
(ii) Cylindrical seals similar to those found in Persian Gulf and mesopotamia have also been found in the Indus area.
(iii) This shows the trade links between these two areas.

(a) Lamp post
(i) Each house and street had a lamp post in Indus civilisation.
(ii) Now a days there is no electric lamp post in deep rural area.
(b) Burnt bricks
(i) The houses were built using baked bricks and mortar.
(ii) Present days we built varity of houses like concrete house, thatch house, etc....
(c) Underground drainage system
(i) Many of these cities in Indus has covered drains. The drains were covered with slabs or bricks.
(ii) Now a days underground drainage system is functioning only major cities.
(d) Weights and measurement
(i) Indus people had developed a systern of standardised weights and measures.
(ii) Present day we used electronic weighing machine also.
(e) Dockyard
(i) A naval dockyard has been discovered in Lothal in Gujarath. It shows the manitime activities of the Indus people.
(ii) Now a days there are so many seaports spread in all over India.

(i) The earth is the most suitable planet to support life.
(ii) It has thrge major components that we call as the realms of the Earth lithosphere, hydrosphere and atmosphere.
Lithosphere:
(i) The lithosphere is the land on which we live.
(ii) It is the solid outer layer of the earth consisting of rocks and soils.
Hydrosphere:
(i) The hydrosphere consists of water bodies such as oceans, seas, rivers, lakes, ice caps.on mountains and water vapour in the atmosphere.
Atmosphere:
(i) Atmosphere is the envelope of air that surrounds the earth.
(ii) Different types of gases make up the atmosphere.
(iii) The major gases are Nitrogen 78% and Oxygen 21%.
(iv) The other gases like Carbon dioxide, Hydrogen, Helium, Argon and Ozone are present in meager amounts.
Biosphere:
(i) The narrow belt of interaction among the lithosphere, the hydrosphere and the atmosphere, where life exists is known as biosphere.
(ii) Bio means life in Greek.
(iii) It consists of distinct zones.
(iv) Each zone has its own climate, plant and animal life.
(iv) These zones are known as ecosystems.

i) I is true, II is wrong

ii) Statement and its reason are correct.